Climate and monthly weather forecastWaukesha, WI
Climate and monthly weather forecast
The climate of Waukesha
Geographically nestled within the Midwestern United States, Waukesha, Wisconsin, experiences a humid continental climate. This climatic condition falls under Köppen climate classification Dfb, characterized by no dry season and a warm summer. The yearly weather cycle in this location is quite contrasting, with a fair distribution of all four distinctive seasons.Temperature variations span from a low of 14°F (-10°C) in January to a high of up to 78.1°F (25.6°C) in July, indicating a vast temperature spectrum. An undulating trend is visible in rainfall throughout the year. The least precipitation occurs in February with approximately 0.51" (13mm), while July has the maximum amount of rainfall at around 1.73" (44mm). Surprisingly, snowfall is not negligible in Waukesha. The cold months, from December to February, show a measureable quantity, peaking in December at around 0.79" (20mm).
A unique feature here is the fairly constant visibility of six miles throughout the year, irrespective of seasonal changes. A more conventional pattern is seen with daylight hours. They peak during the summer months, with a high of 15.3 hours in June, and decline to a low of 9.1 hours in December.
The best time to visit Waukesha
Navigating towards the best time of year to visit Waukesha, climatic data points towards the summer months, primarily June through August. These months showcase a comfortable weather environment with temperatures peaking at around 66.8°F (19.3°C) to 78.1°F (25.6°C), alluring for outdoor activities. It is also the sunniest period, with sunshine hours extending from 9.5 hours in June to a maximum of 10.2 hours in July and August.Besides warmth and extended periods of daylight, these months concurrently present low wind speeds standing between 6.7mph (10.8km/h) and 8.6mph (13.8km/h), adding to the comfort set by the pleasant temperature and clear skies. Coupled with a high UV index of 6 in June, a visit to Waukesha during this time would provide an optimal climate for sightseeing and al fresco dining.
The worst time to visit Waukesha
The most challenging months to visit Waukesha are January and February with temperatures averaging between 14°F (-10°C) and 28.4°F (-2°C). The cold is accompanied by an increased number of snowfall days, peaking at 11.2 in January. The days during these winter months are quite short; daylight hovers around the annual minimum, from 9.4 hours in January to 10.6 hours in February.Further compounding the cold weather are the wind conditions. The wind speed notably increases during this period from an average of 10.6mph (17.1km/h) in January to 11.2mph (18km/h) in February, making it feel even colder. Therefore, unless winter sports and activities are on the agenda, it might be best to avoid Waukesha during these months.
Spring weather in Waukesha
As winter wanes and spring ushers in, Waukesha begins to thaw from March to May. The average high temperature starts to fluctuate between a comfortable 40.6°F (4.8°C) in March, rising to 63.5°F (17.5°C) by May. Meanwhile, opportunities for outdoor activities are enhanced with daylight incrementally increasing over these months, covering from 12 hours in March to 14.7 hours by May.With the arrival of spring, the rainfall also sees quite a hike, especially in April and May. Therefore, visitors should anticipate occasional showers and plan outdoor ventures accordingly. Spring season in Waukesha promises a respite from the harsh winter and a prelude to lovely summer days.
Summer weather in Waukesha
The summer season in Waukesha, covering June through August, treats residents and visitors with warm temperatures fluctuating between 72.3°F (22.4°C) and 78.1°F (25.6°C). These months are characterized by the most prolonged amounts of daylight, peaking in June with 15.3 hours. Along with extended sunlight, the summer season also sees the highest UV index, with a peak of 6 in June.Waukesha's summer season is also marked by a high relative humidity level, averaging from 79% to 81%. During this time, rainfall is frequent, with July experiencing the most rainfall at approximately 1.73" (44mm).
Autumn weather in Waukesha
Transitioning from the sultry summers, Waukesha embraces autumn with a significant drop in temperatures from September to November. From an average high of 70.7°F (21.5°C) in September, temperatures gradually decrease to 43.3°F (6.3°C) by November. Concurrently, daylight hours gradually reduce from 12.5 hours in September to 9.7 hours in November, marking the onset of shorter days.The fall months are uniquely characterized by declining humidity levels from 79% in September to a yearly minimum of 77% in November. Although the rainfall does slightly decrease, temperatures remain relatively pleasant, contributing to the beautiful fall colors spread across the city.
Winter weather in Waukesha
December marks the onset of winter, with average temperatures dropping to around 31.8°F (-0.1°C) by the month-end and further declining to 14°F (-10°C) by January. Despite freezing temperatures and high humidity levels brought about by the winter climate, Waukesha does not see a substantial amount of snowfall; it averages less than an inch throughout the cold season.Despite the cold climate, Waukesha's winter months are characterized by clear skies with the cloud percentage falling to an annual low of 30% in December. Thus, despite the decrease in temperature, the clear skies and reduced cloud cover contribute to a relatively comfortable winter climate. Winter in Waukesha is all about embracing the chill and enjoying the crisp air.
Weather in January
A typical winter month in Waukesha, Wisconsin, January observes a cold climate and regular snowfall. Relatively high humidity levels make the chill in the air quite noticeable, further dropping the perceived temperature. The city experiences frequent snow showers with snowfall count of 1.57" (40mm) occurring over 11.2 days. Weather in January »Weather in February
Transitioning further into the winter season, February in Waukesha continues to be frigid, albeit less snowy when compared to January. The drier atmosphere allows for a slight increase in sunlight despite the persistent cloud cover. Weather in February »Weather in March
Come March, the weather starts showing the first signs of spring. Temperature records show readings starting to climb, heralding the end of the frosty weather. As the leftover winter snow melts, the city starts receiving rainfall over an average of 8 days. Weather in March »Weather in April
As the town steps fully into spring in April, the weather becomes markedly milder. With temperatures comfortably lodged in the cool range, the city enjoys a pleasant climate. April showers turn out to be a reality in Waukesha with rainfall of 1.34" (34mm) recorded over 11.6 days. Weather in April »Weather in May
The pleasant spring weather smoothly transitions into early summer during May in Waukesha, Wisconsin. As the temperature steadily rises, the overall climate remains comfortably warm. Despite a moderate cloud cover, the city enjoys over 14 hours of daylight each day. Weather in May »Weather in June
June marks the onset of the summer season in Waukesha. Temperatures continue to rise, with blue skies being a common sight. The city receives a rainfall amount of 1.34" (34mm) spread across almost 13 days. The return of summer to the city introduces lesser cloudy days and longer sunshine hours, encouraging outdoor activities. Weather in June »Weather in July
July is the warmest month in Waukesha, Wisconsin, with temperatures soaring to as high as 78.1°F (25.6°C). This summer peak brings along increased humidity, creating a tropical atmosphere. Despite this, the city witnesses its maximum rainfall during this period. Weather in July »Weather in August
As August arrives, summer continues its reign in Waukesha even though a slight dip in temperatures is noticeable. The climate remains warm, retaining much of July's tropical feel. The routine of rainfall, however, reduces in intensity. Weather in August »Weather in September
September brings the start of the fall season in Waukesha, Wisconsin. A significant drop in temperature is witnessed, signaling the end of the summer heat. Rain becomes less frequent with a decrease to 0.87" (22mm) of rainfall over just 10.3 days. Weather in September »Weather in October
October accentuates the autumn season further in Waukesha. The climate cools down substantially with temperatures taking a significant plunge. As leaves turn colors, the city skies also see an interesting play of light and shadow due to increased cloud cover. Weather in October »Weather in November
November in Waukesha, Wisconsin, sees the shift from autumn to early winter. The first hints of incoming snow surface as time proceeds, paving the way for the cold season. The city registers its resumed snowfall with 0.75" (19mm) spanning over 4.3 days. Weather in November »Weather in December
The city of Waukesha welcomes the full force of winter in December. As temperatures dip to their lowest, the town braces itself for the cold. With snowfall measuring to 0.79" (20mm) scattered over almost 9 days, the city witnesses a quintessential white December. Weather in December »Updated: Feb 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, with its average high-temperature of 25°F (-3.9°C) and an average low-temperature of 14°F (-10°C), holds the record as the coldest month in Waukesha.
January is the most humid month in Waukesha, with an average relative humidity of 87%.
In Waukesha, during the entire year, the rain falls for 114.5 days and collects up to 12.2" (310mm) of precipitation.
January through April, October through December are months with snowfall in Waukesha.
The month with the most snowfall in Waukesha is January, when snow falls for 11.2 days and typically aggregates up to 1.57" (40mm) of snow.
In Waukesha, during the entire year, snow falls for 43.1 days and aggregates up to 5.35" (136mm) of snow.
January has the least sunshine of the year, with an average of 3.5h of sunshine.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Waukesha.
February and December are months with the least rain when the rain falls for 3.6 days and typically aggregates up to 0.51" (13mm) of rain.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Waukesha, Wisconsin, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
The months with the lowest humidity are April, October and November, with an average relative humidity of 77%.
May through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 18min of daylight.
With an average maximum UV index of 6, June is the month with the highest UV index in Waukesha.
July is the warmest month in Waukesha, with the temperature often reaching an average high of 78.1°F (25.6°C) and an average low of 63°F (17.2°C).
July is the month with the most rainfall. Rain falls for 14.3 days and accumulates 1.73" (44mm) of precipitation.
July and August, with an average of 10.2h of sunshine, are months with the most sunshine.
With an average of 9h and 6min of daylight, December has the shortest days of the year in Waukesha.
Average temperature
Waukesha, WI
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (25°F).
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (14°F).
Average pressure
Waukesha, WI
- Average pressure in January:
30.1"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Waukesha, WI
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.6mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.7mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
10.1mph
The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).
Average humidity
Waukesha, WI
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April, October and November (77%).
Average rainfall
Waukesha, WI
- Average rainfall in January:
0.55" - Average rainfall in February:
0.51" - Average rainfall in March:
0.63" - Average rainfall in April:
1.34" - Average rainfall in May:
1.54" - Average rainfall in June:
1.34"
- Average rainfall in July:
1.73" - Average rainfall in August:
1.38" - Average rainfall in September:
0.87" - Average rainfall in October:
1.22" - Average rainfall in November:
0.59" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is July (1.73").
The driest months (with the least rainfall) are February and December (0.51").
Average rainfall days
Waukesha, WI
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.6 days - Average rainfall days in March:
8 days - Average rainfall days in April:
11.6 days - Average rainfall days in May:
13.1 days - Average rainfall days in June:
12.7 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
10.3 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
6.7 days - Average rainfall days in December:
6.6 days
The month with the highest number of rainy days is July (14.3 days).
The month with the least rainy days is February (3.6 days).
Average snowfall
Waukesha, WI
The month with the highest snowfall is January (1.57").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Waukesha, WI
- Average snowfall days in January:
11.2 days - Average snowfall days in February:
10 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.2 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.7 days - Average snowfall days in November:
4.3 days - Average snowfall days in December:
8.9 days
The month with the highest number of snowfall days is January (11.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Waukesha, WI
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 30min - Average sunshine in February:
3h and 42min - Average sunshine in March:
5h and 54min - Average sunshine in April:
7h and 18min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
10h and 12min - Average sunshine in September:
9h and 6min - Average sunshine in October:
5h and 24min - Average sunshine in November:
4h and 54min - Average sunshine in December:
3h and 54min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Waukesha, WI
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
16.5 days - Average sunshine days in March:
18.7 days - Average sunshine days in April:
15.3 days - Average sunshine days in May:
15 days - Average sunshine days in June:
14 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
13.9 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
18.5 days
The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is July (13.3 days).
Average UV index
Waukesha, WI
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Waukesha, WI
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Waukesha, WI
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
