Climate and monthly weather forecastKeokuk, IA
Climate and monthly weather forecast
The climate of Keokuk
Keokuk, located in Iowa, USA, experiences a Humid continental climate, accentuated with no dry season and hot summer, according to the Köppen climate classification. Identified as Dfa climate type, this mid-latitudinal climate is defined by noticeable temperature variations throughout the year.The yearly climate in Keokuk shifts from frosty winters acknowledged by the coldest temperature of 19.2°F (-7.1°C) to mild summers reaching a maximum temperature of about 83.7°F (28.7°C). As one progresses through the year, it's observed that temperature swings are frequent depending on the seasonal change. The relative humidity remains moderately high throughout the year, ranging from 70% during October to 81% in the months of June to August.
Uniquely, Keokuk sees an elevated level of rainfall during May, measuring about 3.9" (99mm). Counter to this, the town experiences lesser rain during December with 1.38" (35mm) of rainfall. Interestingly, the wind speed maintains consistency, fluctuating minutely from 6.6mph (10.6km/h) in July to a maximum of 10.4mph (16.7km/h) in January.
The best time to visit Keokuk
Considering the climate parameters, the ideal time to visit Keokuk is between May and September. These months are marked by warm temperatures ranging between 71.6°F (22°C) to 83.7°F (28.7°C), offering comfort for outdoor activities. Moreover, the increased daylight hours from 14.4 hours in May to 14.7 hours by July permit longer exploration hours.The worst time to visit Keokuk
In light of the severe climatic conditions, the period from December to February is less suitable when planning a visit to Keokuk. During these cold months, the temperature sinks to lows ranging between 19.2°F (-7.1°C) to 22.8°F (-5.1°C), perhaps hindering any plans for outdoor activities. Furthermore, the recorded daylight hours are shortest during this span, with just 9.3 hours to 10.7 hours of daylight from December through February.Spring weather in Keokuk
The spring climate in Keokuk, from March to May, welcomes gradual warmth post the chilling winter months. Starting from a softer 50°F (10°C) in March, the temperature escalates to 71.6°F (22°C) by May. Correspondingly, daylight hours increase from 12 hours in March to 14.4 hours in May. Abrupt showers can be expected during this season, particularly in May which has noted 3.9" (99mm) of rainfall.Summer weather in Keokuk
Months between June and August mark the summer season in Keokuk. The atmospheric temperature is recorded as high as reaching up to 83.7°F (28.7°C) in July, rendering it the hottest month. Humidity index peaks during this period, hovering between 81% in the months of June, July, August. Despite the high temperature, the refreshing breeze of wind maintains a modest speed of around 7.6mph (12.2km/h) in June to 6.6mph (10.6km/h) in August.Autumn weather in Keokuk
The onset of Autumn from September to November in Keokuk is categorized by a gradual drop in temperature from 77.5°F (25.3°C) in September to 49.5°F (9.7°C) in November. Hours of daylight follow a similar pattern, decreasing from 12.4 hours in September to 9.9 hours by November. Rainfall is moderate in this season, with September witnessing 2.28" (58mm) and a slight decrease to 1.81" (46mm) in November.Winter weather in Keokuk
The winter months of December to February introduce a freezing weather pattern in Keokuk, with minimum temperatures dropping to 19.2°F (-7.1°C) in January. The cycle of daylight hours experiences a shrinkage, measuring from 9.3 hours in December to 9.7 hours in February. Measurable snowfall characterizes this period, with the highest amount recorded at 3.94" (100mm) in December and a decline to 2.99" (76mm) by February.Weather in January
January in Keokuk, Iowa, is characterized by cold weather with January’s average low temperature being 19.2°F (-7.1°C) and a high of 31.6°F (-0.2°C). The cold weather conditions are accompanied by high humidity and reduced hours of daylight. Weather in January »Weather in February
Keokuk’s weather takes a turn for the milder in February. While winter’s grip is still firm, the city emerges from the harshest cold of January. The sunlight lasts longer and the snowfall decreases. Though the low temperatures persist, snowfall decreases substantially from 3.94" (100mm) to 2.99" (76mm). Weather in February »Weather in March
By March, Keokuk begins to exhibit early signs of spring. An apparent temperature rise occurs as winter begins to lose its grip over the city. The arrival of rain is marked with an increase in rainfall from 1.46" (37mm) in February to 2.36" (60mm) in March. Weather in March »Weather in April
April witnesses a visible change in Keokuk’s weather pattern. Warmer temperatures prevail as the sun shines for longer hours. Spring is in full bloom with the loss of the last vestiges of snowfall. There is, however, a climb in rain events, resulting in March's 2.36" (60mm) of rainfall swelling to 3.19" (81mm) in April. Weather in April »Weather in May
May is a month of growth and warmth in Keokuk. The transition from the mildness of spring to the warmth of summer is nearly complete. Average temperatures continue to rise, making the climate quite pleasant. Outdoor activities are encouraged with longer daylight hours and more consistent sunshine. Weather in May »Weather in June
Keokuk turns into a summer wonderland in June. This month exhibits maximum daylight hours and extended sunshine durations. The climate becomes comfortably warm and humid. Moreover, temperatures stabilize, bringing warmth without the intensity of July’s heat. Weather in June »Weather in July
July is the pinnacle of summer in Keokuk, boasting highest average temperatures, from 66.6°F (19.2°C) to 83.7°F (28.7°C). The days are long and filled with lots of sunshine. Despite being the warmest, it remains less dry than some of the preceding months. Weather in July »Weather in August
As August arrives, Keokuk retains much of July’s warmth, but a slight dip in temperatures begins to occur. The weather remains perfect for outdoor pursuits, with long sunny days prevailing. Rainfall reduces, and the wind speed, although still mild, stabilizes. Weather in August »Weather in September
September in Keokuk introduces the early signs of autumn. This transitory month exhibits a noticeable decrease in temperature, as summer gives way to the mellow warmth of fall. The sunlight period slowly shortens and the rainfall also drops to 2.28" (58mm), yet the weather remains generally pleasant. Weather in September »Weather in October
The distinct autumn colors paint Keokuk with myriad hues in October. A significant drop in the temperature sets this month apart from the warmth of September. The days start to shorten, rain occurs more sporadically and the evenings turn cooler. Weather in October »Weather in November
As Keokuk moves into November, there is an obvious oncoming of winter. The climatic conditions continue to cool down. The city prepares for wintry conditions, as rainfall decreases and snowfall increases. By this time of year, daylight hours reduce significantly, Shadows become longer and the sunshine is less intense, echoing the onset of winter's chill. November in Keokuk, Iowa, is characterized by a reduction in the average high-temperature, from a refreshing 63.3°F (17.4°C) in October to a chilly 49.5°F (9.7°C). Weather in November »Weather in December
December in Keokuk rings in the winter season. Frigid temperatures become the norm, and Christmas celebrations light up the snowy landscapes. It's the period of shortest days and longest nights, with decreased sunshine and daylight hours. Weather in December »Updated: Jul 15, 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
With average high and low temperatures of 31.6°F (-0.2°C) and 19.2°F (-7.1°C) respectively, January is Keokuk's coldest month.
January is the month with the least rainfall. Rain falls for 5.8 days and accumulates 1.34" (34mm) of precipitation.
Throughout the year, there are 140.6 rainfall days, and 27.72" (704mm) of precipitation is accumulated.
January through April, October through December are months with snowfall in Keokuk.
January is the month with the most snowfall. Snow falls for 9.8 days and accumulates 3.94" (100mm) of snow.
In Keokuk, during the entire year, snow falls for 29.4 days and aggregates up to 11.3" (287mm) of snow.
With an average of 4.3h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 3.9" (99mm) of precipitation.
In Keokuk, snow does not fall in May through September.
June and July, with an average relative humidity of 81%, are most humid months in Keokuk.
The month with the longest days is June, with an average of 15h and 0min of daylight.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
July is the warmest month, exhibiting average temperatures of 83.7°F (28.7°C) at the peak and 66.6°F (19.2°C) at the base.
July has the most sunshine of the year, with an average of 10.4h of sunshine.
With an average relative humidity of 70%, October is the least humid month.
With an average of 9h and 18min of daylight, December has the shortest days of the year.
Average temperature
Keokuk, IA
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (31.6°F).
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure
Keokuk, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Keokuk, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.2mph - Average wind speed in November:
10mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity
Keokuk, IA
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Keokuk, IA
- Average rainfall in January:
1.34" - Average rainfall in February:
1.46" - Average rainfall in March:
2.36" - Average rainfall in April:
3.19" - Average rainfall in May:
3.9" - Average rainfall in June:
3.35"
- Average rainfall in July:
2.52" - Average rainfall in August:
2.09" - Average rainfall in September:
2.28" - Average rainfall in October:
2.05" - Average rainfall in November:
1.81" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days
Keokuk, IA
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
5.7 days - Average rainfall days in March:
12.7 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
12.2 days - Average rainfall days in September:
11.7 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
9.6 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.7 days).
Average snowfall
Keokuk, IA
The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Keokuk, IA
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
7 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0 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:
0.4 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
6.2 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Keokuk, IA
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
4h and 36min - Average sunshine in March:
6h and 36min - Average sunshine in April:
8h and 12min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 6min - Average sunshine in September:
9h and 24min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Keokuk, IA
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
15.5 days - Average sunshine days in March:
14.2 days - Average sunshine days in April:
12.5 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
17.2 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
18.4 days - Average sunshine days in December:
18.6 days
The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is June (10.9 days).
Average UV index
Keokuk, IA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Keokuk, IA
The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility
Keokuk, IA
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).
