Climate and monthly weather forecastSun Prairie, WI
Climate and monthly weather forecast
The climate of Sun Prairie
Situated in the humid continental climate zone as per the Köppen climate classification, Sun Prairie, Wisconsin, experiences no dry season with warm summer. Geographically, it is positioned in the northern region of the United States, thus displaying remarkable seasonal variations.A review of climatic data denotes defined temperature fluctuations throughout a calendar year. Maximum temperatures typically range from a cool 23.4°F (-4.8°C) in January to a pleasant 78.6°F (25.9°C) in July. Comparatively, the minimum temperatures can drop as low as 10.9°F (-11.7°C) in January and peak at 61.5°F (16.4°C) in July. This indicates a clear transitional gradation in temperatures, reflecting the seasonal weather changes.
Studying the annual rainfall, it demonstrates irregular patterns with the highest precipitation registered at 3.39" (86mm) in May and the lowest at 1.1" (28mm) in February. On the contrary, the rate of snowfall logically decreases from a high of 5.04" (128mm) in January to no registered snow from May through September.
This climate also experiences average daylight hours steadily increasing from 9.4 hours in January to a peak of 15.3 hours in June. As for sunshine, the town registers optimum hours between June and August, with an average of 9.7 hours per day.
The best time to visit Sun Prairie
Given the weather conditions and climatic variations, the time between June and August proves to be the most suitable for visiting Sun Prairie. The town experiences its warmest temperatures during this period, averaging between 74.8°F (23.8°C) and 78.6°F (25.9°C). Furthermore, these months maximize daylight up to approximately 15 hours, providing ample time for outdoor activities.The Worst Time to Visit Sun Prairie
Travelers should preferably avoid Sun Prairie during the initial months of the year when the frigid temperatures prevail. January, in particular, witnesses the coldest days with average minimum and maximum temperatures dropping to 10.9°F (-11.7°C) and 23.4°F (-4.8°C), respectively.Spring Weather in Sun Prairie
Spring in Sun Prairie, which lasts from March to May sees gradual warming from 41.4°F (5.2°C) to 65.8°F (18.8°C). The period marks an increase in rainfall, with maximum precipitation of approximately 3.39" (86mm) in May. Concurrently rainfall days peak at around 17.5 days, and hours of daylight increase to up to 14.7 hours, while the snowfall diminishes entirely by the beginning of May.Summer Weather in Sun Prairie
During the months of summer, from June to August, Sun Prairie experiences warm weather with temperatures ranging from 74.8°F (23.8°C) to 78.6°F (25.9°C). This period also sees the longest daylight hours extending to approximately 15 hours per day, and the number of sunshine hours peaks near 9.8 hours daily. The rainfall in summer averages from 2.68" (68mm) to 3.35" (85mm).Autumn Weather in Sun Prairie
Autumn in Sun Prairie, extending from September to November, encounters temperatures decreasing from 70.7°F (21.5°C) to 42.3°F (5.7°C). These months experience moderate rainfall, though October receives slightly more precipitation at an average of 2.72" (69mm). The daylight hours and sunshine gradually decrease during this time, with daylight dwindling to 9.7 hours and sunshine to 4.9 hours in November.Winter Weather in Sun Prairie
The winter season in Sun Prairie, extending from December to February, experiences the coldest temperature averages dropping as low as 10.9°F (-11.7°C). The area experiences the highest snowfall during this period, peaking at 5.04" (128mm) in January, followed by the highest snowfall days at 14.2. The fewest daylight hours are recorded in December with 9 hours, alongside minimum sunshine hours dropping to 3.9 hours.Weather in January
Considering a midwinter month in Sun Prairie, Wisconsin, the weather is typically cold. Overall, conditions appear frosty and grey dominated by an 89% relative humidity. Predominantly, January showcases the highest amount of snow for the year, amassing 5.04" (128mm) of snowfall. Weather in January »Weather in February
February's weather in Sun Prairie, Wisconsin, carries over the chilly conditions from January but with a slight rise in temperature. Following January, it becomes the second coldest month of the year. With a slight increase in temperatures compared to January, up to 27°F (-2.8°C), the presence of the sun feels marginally warm in the afternoons. Weather in February »Weather in March
The weather in March in Sun Prairie, Wisconsin, hints at the advent of spring, although winter influences can still be noticed. The month experiences a notable increase in temperature, which may reach up to 41.4°F (5.2°C) while also retaining a good chance of sporadic snowfall. Weather in March »Weather in April
The weather in April in Sun Prairie, Wisconsin, typically showcases an evident transition from winter to spring and is dramatically different than March. As temperatures further increase, up to 53.6°F (12°C), the remaining snow from winter dissolves completely. Weather in April »Weather in May
May weather in Sun Prairie, Wisconsin, acts as a segue into summer, allowing local residents to enjoy the increasing warmth. May’s temperature rise, up to 65.8°F (18.8°C), heralds the beginning of summer days, but evenings remain fairly cool. Weather in May »Weather in June
The weather in June in Sun Prairie, Wisconsin, fully ushers in the beloved summer. In contrast to the mellow May, June invites full-fledged summer warmth, achieving temperatures of up to 74.8°F (23.8°C). This rise in temperature complements the increase in sunny days and longer daylight hours. Weather in June »Weather in July
July weather often represents the peak of summertime in Sun Prairie, Wisconsin. The heat of the season is now at its zenith, reaching a top temperature of 78.6°F (25.9°C). Balmy afternoons and warm nights become the norm. With the arrival of dry spells and lower rainfall compared to the initial summer months, July is most often associated with long, hot summer days. Weather in July »Weather in August
August weather in Sun Prairie, Wisconsin, indicates the last leg of the summer season, still maintaining a high level of warmth but showing early signs of subsiding. Compared to the high temperatures in July, August's climatic pattern displays a slight reduction, with temperatures hitting up to 77.2°F (25.1°C). Weather in August »Weather in September
September’s weather in Sun Prairie, Wisconsin, begins to dip into the early notes of autumn, setting itself apart from the fading summer. A noticeable shift from the high temperatures of the previous months is visible with September's average high dropping down to 70.7°F (21.5°C). Weather in September »Weather in October
The weather in October in Sun Prairie, Wisconsin, combines the crisp autumn air and the beautiful landscape painted by the fall foliage. A significant drop in temperature can be observed, with the warmth of September transitioning into cooler days. Weather in October »Weather in November
November weather in Sun Prairie, Wisconsin, acts as the gateway to winter, marking noticeable changes in weather behavior. Compared to the comfortable chills of October, November’s temperatures dip between 30°F (-1.1°C) and 42.3°F (5.7°C), suggesting the imminent arrival of winter. Weather in November »Weather in December
December lays out the white carpet of winter in Sun Prairie, Wisconsin. In contrast to November, winter now takes the lead, dropping the average temperature down to 30°F (-1.1°C). Snowfall becomes a regular occurrence, creating a stunning winter landscape. 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 stands out as Sun Prairie's coldest month, with an average high-temperature of 23.4°F (-4.8°C) and a low-temperature of 10.9°F (-11.7°C).
With an average relative humidity of 89%, January is the most humid month in Sun Prairie.
In Sun Prairie, during the entire year, the rain falls for 138.5 days and collects up to 26.42" (671mm) of precipitation.
Months with snowfall in Sun Prairie, Wisconsin, are January through April, October through December.
The month with the most snowfall is January, when snow falls for 14.2 days and typically aggregates up to 5.04" (128mm) of snow.
In Sun Prairie, during the entire year, snow falls for 53 days and aggregates up to 19.06" (484mm) of snow.
January has the least sunshine of the year in Sun Prairie, Wisconsin, with an average of 3.3h of sunshine.
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Sun Prairie, Wisconsin.
The month with the least rainfall in Sun Prairie, Wisconsin, is February, when the rain falls for 4.8 days and typically collects 1.1" (28mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Sun Prairie, 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.
With an average relative humidity of 76%, April is the least humid month in Sun Prairie.
May is the month with the most rainfall in Sun Prairie, Wisconsin. Rain falls for 17.5 days and accumulates 3.39" (86mm) of precipitation.
May through September are months without snowfall in Sun Prairie.
May through August, with an average maximum UV index of 5, are months with the highest UV index in Sun Prairie, Wisconsin.
The month with the longest days is June, with an average of 15h and 18min of daylight.
In Sun Prairie, temperatures reach their average annual highs in July, measuring 78.6°F (25.9°C) and a minimum average of 61.5°F (16.4°C).
July has the most sunshine of the year in Sun Prairie, Wisconsin, with an average of 9.9h of sunshine.
The month with the shortest days is December, with an average of 9h and 0min of daylight.
Average temperature
Sun Prairie, WI
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (23.4°F).
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure
Sun Prairie, WI
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.11"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:
29.91"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 months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Sun Prairie, WI
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.6mph - Average wind speed in April:
10.1mph - 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:
6.6mph - Average wind speed in September:
7.5mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Sun Prairie, WI
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (76%).
Average rainfall
Sun Prairie, WI
- Average rainfall in January:
1.22" - Average rainfall in February:
1.1" - Average rainfall in March:
1.69" - Average rainfall in April:
2.91" - Average rainfall in May:
3.39" - Average rainfall in June:
3.35"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is February (1.1").
Average rainfall days
Sun Prairie, WI
- Average rainfall days in January:
4.7 days - Average rainfall days in February:
4.8 days - Average rainfall days in March:
10.9 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
15.3 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.7 days).
Average snowfall
Sun Prairie, WI
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Sun Prairie, WI
- Average snowfall days in January:
14.2 days - Average snowfall days in February:
11 days - Average snowfall days in March:
6.8 days - Average snowfall days in April:
3.3 days - Average snowfall days in May:
0.3 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:
0.9 days - Average snowfall days in November:
5.4 days - Average snowfall days in December:
11.1 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sun Prairie, WI
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - 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 0min
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 0min).
- Average sunshine in January:
3h and 18min - Average sunshine in February:
3h and 42min - Average sunshine in March:
5h and 48min - Average sunshine in April:
7h and 18min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 36min - Average sunshine in October:
5h and 12min - Average sunshine in November:
4h and 54min - Average sunshine in December:
3h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days
Sun Prairie, WI
- Average sunshine days in January:
14.5 days - Average sunshine days in February:
13.9 days - Average sunshine days in March:
15.4 days - Average sunshine days in April:
11.9 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.8 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
15.4 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is December (16.8 days).
The month with the least sunshine days is June (10.8 days).
Average UV index
Sun Prairie, WI
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Sun Prairie, WI
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility
Sun Prairie, WI
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
