Climate and monthly weather forecastDayton, IN
Climate and monthly weather forecast
Weather in January
January, the same as December, in Dayton, Indiana, is another subzero cold winter month, with temperature in the range of an average low of 19.8°F (-6.8°C) and an average high of 31.8°F (-0.1°C). January, having an average high-temperature of 31.8°F (-0.1°C) and an average low-temperature of 19.8°F (-6.8°C), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Dayton, is an icy month, with an average temperature fluctuating between 23.4°F (-4.8°C) and 36.3°F (2.4°C). Dayton experiences an average high-temperature of a wintry 36.3°F (2.4°C) with the onset of February, subtly varied from January's 31.8°F (-0.1°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Dayton, Indiana, with an average temperature fluctuating between 33.4°F (0.8°C) and 48.6°F (9.2°C). March's onset is marked by a temperature increase, moving from a wintry 36.3°F (2.4°C) in February to a chilly 48.6°F (9.2°C). Weather in March »Weather in April
April in Dayton, Indiana, is a moderate spring month, with an average temperature fluctuating between 60.3°F (15.7°C) and 44.2°F (6.8°C). Dayton sees a rise in temperature during April, with average high-temperatures transitioning from a chilly 48.6°F (9.2°C) in March to a mild 60.3°F (15.7°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Dayton, Indiana, with an average temperature fluctuating between 54.9°F (12.7°C) and 71.6°F (22°C). May's onset is marked by a temperature increase, moving from a moderate 60.3°F (15.7°C) in April to an agreeable 71.6°F (22°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Dayton, Indiana, with temperature in the range of an average high of 79.3°F (26.3°C) and an average low of 63°F (17.2°C). The onset of June introduces a subtle rise in the average high-temperature, nudging from a pleasant 71.6°F (22°C) in May to a warm 79.3°F (26.3°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Dayton, Indiana, with an average temperature varying between 81.1°F (27.3°C) and 64°F (17.8°C). July brings the highest temperatures, with an average high of 81.1°F (27.3°C) and an average low of 64°F (17.8°C). Throughout July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Dayton, Indiana, with an average temperature varying between 62.6°F (17°C) and 79.9°F (26.6°C). The average high-temperature during August registers at a still moderately hot 79.9°F (26.6°C), closely corresponding to the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Dayton, is still a warm month, with temperature in the range of an average low of 57.2°F (14°C) and an average high of 75°F (23.9°C). Dayton's shift into September is marked by a subtle change to a still moderately hot 75°F (23.9°C) from August's 79.9°F (26.6°C) in temperature. Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Dayton, Indiana, with an average temperature varying between 46.8°F (8.2°C) and 62.4°F (16.9°C). October involves a decrease in temperature, down from a warm 75°F (23.9°C) in September to a comfortable 62.4°F (16.9°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Dayton, Indiana, with an average temperature ranging between max 48.2°F (9°C) and min 35.1°F (1.7°C). November's arrival correlates with a reduction in the average high-temperature, down from a refreshing 62.4°F (16.9°C) in October to a frosty 48.2°F (9°C). Weather in November »Weather in December
December, the first month of the winter in Dayton, is still a cold month, with temperature in the range of an average low of 27.3°F (-2.6°C) and an average high of 37.6°F (3.1°C). December involves a decrease in temperature, down from a chilly 48.2°F (9°C) in November to a cold 37.6°F (3.1°C). Weather in December »Updated: Jun 26, 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 is the month when Dayton experiences its coldest temperatures, averaging a high of 31.8°F (-0.1°C) and a low of 19.8°F (-6.8°C).
Throughout the year, there are 161.4 rainfall days, and 26.89" (683mm) of precipitation is accumulated.
Months with snowfall in Dayton are January through April, October through December.
The month with the most snowfall is January, when snow falls for 12.4 days and typically aggregates up to 3.03" (77mm) of snow.
In Dayton, Indiana, during the entire year, snow falls for 41.6 days and aggregates up to 11.57" (294mm) of snow.
With an average of 4h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.
February is the month with the least rainfall. Rain falls for 7.4 days and accumulates 1.54" (39mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
April is the month with the most rainfall. Rain falls for 15.8 days and accumulates 3.43" (87mm) of precipitation.
May through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 0min of daylight.
With an average of 10.1h of sunshine, June has the most sunshine of the year.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
Temperature records mark July as the warmest month, with highs averaging 81.1°F (27.3°C) and lows at 64°F (17.8°C).
With an average relative humidity of 84%, July is the most humid month in Dayton.
October is the least humid month in Dayton, with an average relative humidity of 73%.
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Dayton, IN
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure
Dayton, IN
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Dayton, IN
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.2mph - Average wind speed in March:
9.8mph - Average wind speed in April:
10mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.2mph - Average wind speed in August:
6.2mph - Average wind speed in September:
7mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity
Dayton, IN
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Dayton, IN
- Average rainfall in January:
1.85" - Average rainfall in February:
1.54" - Average rainfall in March:
2.44" - Average rainfall in April:
3.43" - Average rainfall in May:
3.19" - Average rainfall in June:
2.83"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.4" - Average rainfall in September:
1.57" - Average rainfall in October:
1.85" - Average rainfall in November:
1.73" - Average rainfall in December:
1.61"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is February (1.54").
Average rainfall days
Dayton, IN
- Average rainfall days in January:
7.1 days - Average rainfall days in February:
7.4 days - Average rainfall days in March:
13 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
19.4 days - Average rainfall days in June:
17.7 days
- Average rainfall days in July:
18.2 days - Average rainfall days in August:
16.5 days - Average rainfall days in September:
14 days - Average rainfall days in October:
13.1 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
9.5 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is January (7.1 days).
Average snowfall
Dayton, IN
The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Dayton, IN
- Average snowfall days in January:
12.4 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
5.1 days - Average snowfall days in April:
1.4 days - Average snowfall days in May:
0.1 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:
0.5 days - Average snowfall days in November:
3.8 days - Average snowfall days in December:
8.8 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Dayton, IN
- 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:
10h and 0min - 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 0min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 12min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 18min - Average sunshine in September:
8h and 18min - Average sunshine in October:
6h and 36min - Average sunshine in November:
5h and 12min - Average sunshine in December:
4h and 18min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Dayton, IN
- Average sunshine days in January:
13.5 days - Average sunshine days in February:
11.5 days - Average sunshine days in March:
13.5 days - Average sunshine days in April:
11.6 days - Average sunshine days in May:
9.3 days - Average sunshine days in June:
10.1 days
- Average sunshine days in July:
9.3 days - Average sunshine days in August:
10.5 days - Average sunshine days in September:
13.4 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
17.5 days - Average sunshine days in December:
14.3 days
The month with the most sunshine days is November (17.5 days).
The months with the least sunshine days are May and July (9.3 days).
Average UV index
Dayton, IN
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
Dayton, IN
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June, July, August and September (Cloud cover 33).
Average visibility
Dayton, IN
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
