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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is a freezing cold winter month in Henderson, Iowa, with an average temperature fluctuating between 16.7°F (-8.5°C) and 30°F (-1.1°C). The month of January sees the lowest average temperatures, reaching 30°F (-1.1°C) at the peak and 16.7°F (-8.5°C) at the low. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Henderson, Iowa, with an average temperature ranging between min 19.6°F (-6.9°C) and max 34.3°F (1.3°C). With the onset of February, Henderson's average high-temperature clocks in at a cold 34.3°F (1.3°C), showing a minor fluctuation from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Henderson, Iowa, with an average temperature ranging between max 49.5°F (9.7°C) and min 33.3°F (0.7°C). In March, the meteorological conditions markedly change with the average high-temperature ascending from an icy 34.3°F (1.3°C) in February to a chilly 49.5°F (9.7°C). Weather in March »
Weather in April
April in Henderson, Iowa, is an enjoyable spring month, with an average temperature varying between 61.3°F (16.3°C) and 42.8°F (6°C). Henderson experiences a temperature shift with the start of April, with average high-temperatures moving from a frosty 49.5°F (9.7°C) in March to an enjoyable 61.3°F (16.3°C). Weather in April »
Weather in May
May, the last month of the spring in Henderson, is an agreeable month, with temperature in the range of an average high of 70.7°F (21.5°C) and an average low of 54°F (12.2°C). May sees a temperature increase, moving from a comfortable 61.3°F (16.3°C) in April to an agreeable 70.7°F (21.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Henderson, Iowa, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 81°F (27.2°C). Henderson in June sees a temperature change, with average high-temperatures moving from an agreeable 70.7°F (21.5°C) in May to a warm 81°F (27.2°C). Weather in June »
Weather in July
July, like June, in Henderson, Iowa, is a moderately hot summer month, with an average temperature fluctuating between 65.8°F (18.8°C) and 83.7°F (28.7°C). Temperature readings reach their annual highs in July, averaging 83.7°F (28.7°C) and a minimum average of 65.8°F (18.8°C). July's mean heat index is calculated to be a hot 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Henderson, Iowa, with an average temperature fluctuating between 81.9°F (27.7°C) and 63.1°F (17.3°C). Henderson's weather in August indicates an average high-temperature of a still moderately hot 81.9°F (27.7°C), nearly consistent with the 83.7°F (28.7°C) of July. Weather in August »
Weather in September
September, the first month of the autumn in Henderson, is also a moderately hot month, with an average temperature varying between 76.6°F (24.8°C) and 56.5°F (13.6°C). The shift into September uncovers an average high-temperature of a still warm 76.6°F (24.8°C), subtly different from the previous month. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Henderson, Iowa, with an average temperature fluctuating between 45°F (7.2°C) and 61.5°F (16.4°C). October brings a significant decrease in the average high-temperature, moving down from a moderately hot 76.6°F (24.8°C) in September to an enjoyable 61.5°F (16.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Henderson, is also a frosty month, with an average temperature varying between 33.3°F (0.7°C) and 48.6°F (9.2°C). Henderson's weather in November involves a decrease in the average high-temperature, moving down from October's comfortable 61.5°F (16.4°C) to a chilly 48.6°F (9.2°C). Weather in November »
Weather in December
December, the first month of the winter in Henderson, is also an icy month, with an average temperature varying between 22.1°F (-5.5°C) and 34.7°F (1.5°C). The arrival of December signals a shift in temperature, down from a frosty 48.6°F (9.2°C) in November to an icy 34.7°F (1.5°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Henderson?
January, having an average high-temperature of 30°F (-1.1°C) and an average low-temperature of 16.7°F (-8.5°C), is the coldest month.
What is the most humid month in Henderson?
The most humid month is January, with an average relative humidity of 81%.
What is the driest month in Henderson?
The months with the least rainfall in Henderson, Iowa, are January and February Rain falls for 3.6 days and accumulates 0.63" (16mm) of rain.
How much does it rain in Henderson?
Throughout the year, in Henderson, there are 117.2 rainfall days, and 21.77" (553mm) of precipitation is accumulated.
When does it snow in Henderson?
January through April, October through December are months with snowfall in Henderson, Iowa.
When does it snow the most in Henderson?
January is the month with the most snowfall in Henderson. Snow falls for 7.9 days and accumulates 2.68" (68mm) of snow.
How many days does it snow in Henderson?
Throughout the year, in Henderson, there are 26.7 snowfall days, and 9.76" (248mm) of snow is accumulated.
What is the month with the least sunshine in Henderson?
The month with the least sunshine in Henderson is January, with an average of 4.6h of sunshine.
When is the lowest UV index in Henderson?
The months with the lowest UV index in Henderson, Iowa, are January, February, October through December, with an average maximum UV index of 2.
When is Daylight Saving Time (DST) in Henderson?
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.
When it does not snow in Henderson?
In Henderson, Iowa, snow does not fall in May through September.
What is the rainiest month in Henderson?
June is the month with the most rainfall in Henderson, Iowa. Rain falls for 14.9 days and accumulates 4.06" (103mm) of precipitation.
When are the longest days in Henderson?
With an average of 15h and 6min of daylight, June has the longest days of the year in Henderson.
What is the month with the highest UV index in Henderson?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Henderson.
What are the warmest months in Henderson?
Henderson's temperature records reveal July as the warmest month, marked by average highs of 83.7°F (28.7°C) and lows of 65.8°F (18.8°C).
What month has the most sunshine in Henderson?
With an average of 10.3h of sunshine, July has the most sunshine of the year.
What is the least humid month in Henderson?
With an average relative humidity of 68%, October is the least humid month.
What is the month with the shortest days in Henderson?
December has the shortest days of the year in Henderson, with an average of 9h and 18min of daylight.
Average temperature
Henderson, 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 (30°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure
Henderson, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Henderson, IA
- Average wind speed in January:
10mph - Average wind speed in February:
10.1mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
8.2mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
7mph - Average wind speed in September:
8.1mph - Average wind speed in October:
9.3mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.6mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity
Henderson, IA
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (68%).
Average rainfall
Henderson, IA
- Average rainfall in January:
0.63" - Average rainfall in February:
0.63" - Average rainfall in March:
1.18" - Average rainfall in April:
1.73" - Average rainfall in May:
3.5" - Average rainfall in June:
4.06"
- Average rainfall in July:
2.32" - Average rainfall in August:
2.56" - Average rainfall in September:
1.77" - Average rainfall in October:
1.57" - Average rainfall in November:
0.83" - Average rainfall in December:
0.98"
The wettest month (with the highest rainfall) is June (4.06").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days
Henderson, IA
- Average rainfall days in January:
3.6 days - Average rainfall days in February:
2.9 days - Average rainfall days in March:
9.8 days - Average rainfall days in April:
12.8 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
13.7 days - Average rainfall days in August:
13 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
8.7 days - Average rainfall days in November:
5.3 days - Average rainfall days in December:
4.2 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (2.9 days).
Average snowfall
Henderson, IA
The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Henderson, IA
- Average snowfall days in January:
7.9 days - Average snowfall days in February:
7.3 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:
0.7 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
4.8 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Henderson, IA
- Average daylight in January:
9h and 4min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 3min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
5h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 5min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days
Henderson, IA
- Average sunshine days in January:
20.4 days - Average sunshine days in February:
18.8 days - Average sunshine days in March:
17.4 days - Average sunshine days in April:
14.9 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
12.7 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
16.9 days - Average sunshine days in October:
20 days - Average sunshine days in November:
22.5 days - Average sunshine days in December:
23.1 days
The month with the most sunshine days is December (23.1 days).
The month with the least sunshine days is May (12.3 days).
Average UV index
Henderson, 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, October, November and December (UV index 2).
Average cloud cover
Henderson, IA
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility
Henderson, 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).
Henderson, Iowa, USA
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