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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 another subzero cold winter month in Dayton, Iowa, with an average temperature varying between 13.5°F (-10.3°C) and 26.8°F (-2.9°C). With its high average temperature of 26.8°F (-2.9°C) and a low of 13.5°F (-10.3°C), January is regarded as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Dayton, Iowa, with an average temperature varying between 16.9°F (-8.4°C) and 30.6°F (-0.8°C). Dayton commences February with an average high-temperature of a still freezing cold 30.6°F (-0.8°C), maintaining a close resemblance to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Dayton, is a frosty month, with an average temperature fluctuating between 45.7°F (7.6°C) and 30.9°F (-0.6°C). The onset of March brings a distinct rise in the average high-temperature, advancing from a freezing cold 30.6°F (-0.8°C) in February to a chilly 45.7°F (7.6°C). Weather in March »
Weather in April
April is a refreshing spring month in Dayton, Iowa, with an average temperature fluctuating between 58.6°F (14.8°C) and 41.9°F (5.5°C). The arrival of April brings a change in Dayton's weather, with average high-temperatures moving from March's chilly 45.7°F (7.6°C) to a moderate 58.6°F (14.8°C). Weather in April »
Weather in May
May, the last month of the spring in Dayton, is a pleasant month, with an average temperature fluctuating between 52.9°F (11.6°C) and 69.4°F (20.8°C). The start of May signals an increase in the average high-temperature, moving from a mild 58.6°F (14.8°C) in April to a pleasant 69.4°F (20.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Dayton, Iowa, with an average temperature ranging between max 79.2°F (26.2°C) and min 62.2°F (16.8°C). Noticing a change, the average high-temperature during June moves from May's agreeable 69.4°F (20.8°C) to a moderately hot 79.2°F (26.2°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Dayton, Iowa, with an average temperature fluctuating between 81.5°F (27.5°C) and 64.4°F (18°C). Dayton experiences its highest temperatures in July, with an average peak of 81.5°F (27.5°C) and a low of 64.4°F (18°C). In July, the average heat index is appraised at a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Dayton, Iowa, with an average temperature fluctuating between 61.3°F (16.3°C) and 80.2°F (26.8°C). The arrival of August denotes a barely perceptible change in the average high-temperatures to a still warm 80.2°F (26.8°C) from July's 81.5°F (27.5°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Dayton, Iowa, with an average temperature ranging between max 74.8°F (23.8°C) and min 55.9°F (13.3°C). The advent of September brings a subtle shift in temperature, with the average high moving from a moderately hot 80.2°F (26.8°C) in August to a still warm 74.8°F (23.8°C). Weather in September »
Weather in October
October, like September, is a moderate autumn month in Dayton, Iowa, with an average temperature varying between 59.9°F (15.5°C) and 44.1°F (6.7°C). With the onset of October, Dayton's weather experiences a distinct temperature drop, moving from a warm 74.8°F (23.8°C) in September to a mild 59.9°F (15.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Dayton, is another chilly month, with an average temperature varying between 45.5°F (7.5°C) and 32.4°F (0.2°C). Dayton's transition into November is marked by a clear temperature shift, receding from a moderate 59.9°F (15.5°C) in October to a frosty 45.5°F (7.5°C). Weather in November »
Weather in December
December, the first month of the winter in Dayton, is also an icy month, with temperature in the range of an average high of 32°F (0°C) and an average low of 21°F (-6.1°C). Transition into December marks a drop in the average high-temperature, moving from a frosty 45.5°F (7.5°C) in November to a wintry 32°F (0°C). Weather in December »
Updated: Jul 22, 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
What month is the coldest?
January is the coldest month, with an average high-temperature of 26.8°F (-2.9°C) and an average low-temperature of 13.5°F (-10.3°C).
What is the most humid month?
With an average relative humidity of 84%, January is the most humid month.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.91" (23mm) of precipitation.
How much does it rain?
Throughout the year, there are 126.1 rainfall days, and 26.85" (682mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
When does it snow the most?
The month with the most snowfall in Dayton is January, when snow falls for 10.3 days and typically aggregates up to 4.29" (109mm) of snow.
How many days does it snow?
In Dayton, during the entire year, snow falls for 37.8 days and aggregates up to 15.39" (391mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4h of sunshine.
When is the lowest UV index?
January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Dayton, 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 wettest month in Dayton?
May is the month with the most rainfall. Rain falls for 16.1 days and accumulates 4.06" (103mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What are the months with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What is the hottest time of year in Dayton?
July proves to be the warmest month, recording an average peak temperature of 81.5°F (27.5°C) and a minimum temperature of 64.4°F (18°C).
What month has the most sunshine in Dayton?
July has the most sunshine of the year, with an average of 10h of sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 69%.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Dayton, IA
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (26.8°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Dayton, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Dayton, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.3mph
- Average wind speed in July:
7mph - Average wind speed in August:
7.1mph - Average wind speed in September:
8.2mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity
Dayton, IA
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall
Dayton, IA
- Average rainfall in January:
0.91" - Average rainfall in February:
1.02" - Average rainfall in March:
1.61" - Average rainfall in April:
2.8" - Average rainfall in May:
4.06" - Average rainfall in June:
3.94"
- Average rainfall in July:
2.24" - Average rainfall in August:
2.44" - Average rainfall in September:
3.03" - Average rainfall in October:
2.28" - Average rainfall in November:
1.22" - Average rainfall in December:
1.3"
The wettest month (with the highest rainfall) is May (4.06").
The driest month (with the least rainfall) is January (0.91").
Average rainfall days
Dayton, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
16.1 days - Average rainfall days in June:
16.7 days
- Average rainfall days in July:
14.5 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
9.8 days - Average rainfall days in November:
7.5 days - Average rainfall days in December:
4.8 days
The month with the highest number of rainy days is June (16.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Dayton, IA
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Dayton, IA
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
8.6 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
1.5 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:
0.7 days - Average snowfall days in November:
3.2 days - Average snowfall days in December:
8 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Dayton, 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 12min).
- Average sunshine in January:
4h - Average sunshine in February:
4h and 4min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
10h - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 4h).
Average sunshine days
Dayton, IA
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
16.3 days - Average sunshine days in March:
16 days - Average sunshine days in April:
12.8 days - Average sunshine days in May:
13.4 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
14.7 days - Average sunshine days in August:
16.1 days - Average sunshine days in September:
16.5 days - Average sunshine days in October:
19 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is October (19 days).
The month with the least sunshine days is June (11.8 days).
Average UV index
Dayton, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Dayton, IA
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are July and September (Cloud cover 31).
Average visibility
Dayton, IA
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Dayton, Iowa, USA
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