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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, the same as December, in Delaware, Iowa, is a freezing cold winter month, with an average temperature fluctuating between 11.7°F (-11.3°C) and 24.3°F (-4.3°C). Delaware records the coldest temperatures in January, averaging a high of 24.3°F (-4.3°C) and a low of 11.7°F (-11.3°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Delaware, Iowa, with an average temperature ranging between max 27.9°F (-2.3°C) and min 15.1°F (-9.4°C). Delaware observes an average high-temperature of a still freezing cold 27.9°F (-2.3°C) in February, barely different from 24.3°F (-4.3°C) in January. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Delaware, Iowa, with an average temperature ranging between max 43°F (6.1°C) and min 28.8°F (-1.8°C). The transition from February to March brings a clear temperature rise, with average high-temperatures increasing from a freezing cold 27.9°F (-2.3°C) to a frosty 43°F (6.1°C). Weather in March »
Weather in April
April in Delaware, Iowa, is a moderate spring month, with an average temperature ranging between max 55.8°F (13.2°C) and min 39°F (3.9°C). An upsurge in temperatures occurs as March gives way to April, with average highs shifting from a chilly 43°F (6.1°C) to a moderate 55.8°F (13.2°C). Weather in April »
Weather in May
The last month of the spring, May, is an enjoyable month in Delaware, Iowa, with an average temperature fluctuating between 66.9°F (19.4°C) and 50.5°F (10.3°C). Delaware experiences a temperature shift with the start of May, with average high-temperatures moving from a mild 55.8°F (13.2°C) in April to a comfortable 66.9°F (19.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Delaware, Iowa, with an average temperature varying between 59.9°F (15.5°C) and 76.6°F (24.8°C). June's onset brings a temperature rise, moving from a comfortable 66.9°F (19.4°C) in May to a warm 76.6°F (24.8°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Delaware, Iowa, with an average temperature varying between 63°F (17.2°C) and 79.3°F (26.3°C). In Delaware, the peak temperatures are generally noted in July, averaging a high of 79.3°F (26.3°C) and a low of 63°F (17.2°C). Weather in July »
Weather in August
August, the last month of the summer in Delaware, is another warm month, with an average temperature varying between 78.3°F (25.7°C) and 60.4°F (15.8°C). August's weather displays an average high-temperature of a still warm 78.3°F (25.7°C), slightly varied from July's 79.3°F (26.3°C). Weather in August »
Weather in September
September, the first month of the autumn in Delaware, is also an agreeable month, with temperature in the range of an average low of 53.2°F (11.8°C) and an average high of 72.3°F (22.4°C). The transition into September is accompanied by a slight temperature decrease, with the average high-temperature shifting from a warm 78.3°F (25.7°C) in August to a pleasant 72.3°F (22.4°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Delaware, Iowa, with an average temperature ranging between max 58.1°F (14.5°C) and min 42.6°F (5.9°C). Delaware's progression into October involves a drop in the average high-temperature, receding from an agreeable 72.3°F (22.4°C) in September to a refreshing 58.1°F (14.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Delaware, is another chilly month, with an average temperature varying between 30.7°F (-0.7°C) and 43.7°F (6.5°C). November's arrival is marked by a significant decrease in the average high-temperature, moving from a mild 58.1°F (14.5°C) in October to a frosty 43.7°F (6.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Delaware, Iowa, with temperature in the range of an average high of 31.1°F (-0.5°C) and an average low of 20.5°F (-6.4°C). December weather is marked by a drop in the average high-temperature, falling from a frosty 43.7°F (6.5°C) in November to a subzero cold 31.1°F (-0.5°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in Delaware?
January proves to be the coldest month, recording an average maximum temperature of 24.3°F (-4.3°C) and a minimum temperature of 11.7°F (-11.3°C).
What is the most humid month in Delaware?
The most humid month is January, with an average relative humidity of 88%.
How many days does it rain in Delaware?
Throughout the year, in Delaware, there are 111.7 rainfall days, and 13.31" (338mm) of precipitation is accumulated.
When does it snow in Delaware?
January through April, October through December are months with snowfall in Delaware, Iowa.
What is the snowiest month in Delaware?
The month with the most snowfall in Delaware is January, when snow falls for 10.8 days and typically aggregates up to 2.13" (54mm) of snow.
How much does it snow in Delaware?
In Delaware, during the entire year, snow falls for 39.4 days and aggregates up to 6.81" (173mm) of snow.
What is the month with the least sunshine in Delaware?
The month with the least sunshine is January, with an average of 3.5h of sunshine.
What is the month with the lowest UV index in Delaware?
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Delaware?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Delaware, Iowa, 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.
What is the least humid month in Delaware?
The months with the lowest humidity in Delaware are April and October, with an average relative humidity of 75%.
What is the rainiest month in Delaware?
The month with the most rainfall is May, when the rain falls for 14.9 days and typically aggregates up to 2.13" (54mm) of precipitation.
When it does not snow in Delaware?
May through September are months without snowfall.
What is the month with the highest UV index in Delaware?
May through August, with an average maximum UV index of 5, are months with the highest UV index in Delaware.
When are the longest days in Delaware?
June has the longest days of the year in Delaware, with an average of 15h and 12min of daylight.
What is the hottest time of year in Delaware?
July proves to be the warmest month in Delaware, Iowa, recording an average peak temperature of 79.3°F (26.3°C) and a minimum temperature of 63°F (17.2°C).
What are the months with the most sunshine in Delaware?
The months with the most sunshine in Delaware are July and August, with an average of 9.6h of sunshine.
What is the driest month in Delaware?
December is the month with the least rainfall in Delaware, Iowa. Rain falls for 4.5 days and accumulates 0.47" (12mm) of precipitation.
What is the month with the shortest days in Delaware?
The month with the shortest days in Delaware, Iowa, is December, with an average of 9h and 6min of daylight.
Average temperature
Delaware, IA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (24.3°F).
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure
Delaware, IA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"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:
29.96"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Delaware, IA
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.1mph - Average wind speed in September:
8.2mph - Average wind speed in October:
9.8mph - Average wind speed in November:
10.5mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity
Delaware, IA
The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are April and October (75%).
Average rainfall
Delaware, IA
- Average rainfall in January:
0.55" - Average rainfall in February:
0.55" - Average rainfall in March:
0.79" - Average rainfall in April:
1.38" - Average rainfall in May:
2.13" - Average rainfall in June:
1.77"
- Average rainfall in July:
1.65" - Average rainfall in August:
0.94" - Average rainfall in September:
1.3" - Average rainfall in October:
1.06" - Average rainfall in November:
0.71" - Average rainfall in December:
0.47"
The wettest month (with the highest rainfall) is May (2.13").
The driest month (with the least rainfall) is December (0.47").
Average rainfall days
Delaware, IA
- Average rainfall days in January:
3.1 days - Average rainfall days in February:
2.6 days - Average rainfall days in March:
8.8 days - Average rainfall days in April:
12.9 days - Average rainfall days in May:
14.9 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
10.6 days - Average rainfall days in September:
8.9 days - Average rainfall days in October:
10.1 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
4.5 days
The month with the highest number of rainy days is June (15.4 days).
The month with the least rainy days is February (2.6 days).
Average snowfall
Delaware, IA
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Delaware, IA
- Average snowfall days in January:
10.8 days - Average snowfall days in February:
9.2 days - Average snowfall days in March:
5 days - Average snowfall days in April:
1.9 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:
0.8 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
8.8 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Delaware, IA
- Average daylight in January:
9h and 3min - 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 4min - 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 0min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 3min - Average sunshine in February:
3h and 4min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 1min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Delaware, IA
- Average sunshine days in January:
19.4 days - Average sunshine days in February:
16.7 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
13.9 days - Average sunshine days in May:
12.9 days - Average sunshine days in June:
11.7 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
17.2 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
19.7 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is June (11.7 days).
Average UV index
Delaware, IA
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
Delaware, IA
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility
Delaware, IA
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Delaware, Iowa, USA
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