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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
Climate and monthly weather forecast
Weather in January
January, the same as December, in Dayton, Idaho, is a freezing cold winter month, with an average temperature varying between 29.1°F (-1.6°C) and 13.5°F (-10.3°C). The average high-temperature during January registers at a still freezing cold 29.1°F (-1.6°C), closely corresponding to the preceding month. Weather in January »
Weather in February
February, the last month of the winter in Dayton, is also a subzero cold month, with temperature in the range of an average low of 16.7°F (-8.5°C) and an average high of 31.6°F (-0.2°C). In February, Dayton experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 29.1°F (-1.6°C) in January to a still freezing cold 31.6°F (-0.2°C). Weather in February »
Weather in March
March, the first month of the spring in Dayton, is a cold month, with an average temperature varying between 41°F (5°C) and 25.7°F (-3.5°C). A shift in the average high-temperature is noticeable in March, changing from a subzero cold 31.6°F (-0.2°C) in February to a cold 41°F (5°C). Weather in March »
Weather in April
April is a frosty spring month in Dayton, Idaho, with temperature in the range of an average high of 49.8°F (9.9°C) and an average low of 30.6°F (-0.8°C). The beginning of April marks a minor shift in the average high-temperature, moving from March's icy 41°F (5°C) to a frosty 49.8°F (9.9°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Dayton, Idaho, with an average temperature varying between 61.2°F (16.2°C) and 37°F (2.8°C). May shows a rise in the average high-temperature, moving from April's frosty 49.8°F (9.9°C) to a refreshing 61.2°F (16.2°C). Weather in May »
Weather in June
June, the first month of the summer in Dayton, is a warm month, with an average temperature ranging between max 73.6°F (23.1°C) and min 44.6°F (7°C). June's onset is marked by a temperature increase, moving from an enjoyable 61.2°F (16.2°C) in May to a moderately hot 73.6°F (23.1°C). Weather in June »
Weather in July
July, like June, in Dayton, Idaho, is another warm summer month, with an average temperature ranging between max 84.4°F (29.1°C) and min 53.8°F (12.1°C). July, with its average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 53.8°F (12.1°C), holds the record as the warmest month. Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Dayton, Idaho, with an average temperature ranging between min 53.4°F (11.9°C) and max 82.9°F (28.3°C). With August's advent, Dayton sees an average high-temperature of a still warm 82.9°F (28.3°C), subtly shifted from July's 84.4°F (29.1°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Dayton, Idaho, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 46.6°F (8.1°C). The arrival of September corresponds with a reduction in the average high-temperature, down from August's moderately hot 82.9°F (28.3°C) to an agreeable 72.5°F (22.5°C). Weather in September »
Weather in October
October, like September, in Dayton, Idaho, is a cool autumn month, with an average temperature varying between 54.7°F (12.6°C) and 34.7°F (1.5°C). The onset of October witnesses a clear shift in the average high-temperature, dropping from a pleasant 72.5°F (22.5°C) in September to a fresh 54.7°F (12.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a wintry month in Dayton, Idaho, with an average temperature varying between 41.2°F (5.1°C) and 25.3°F (-3.7°C). Dayton's weather changes with the onset of November, slightly falling from a fresh 54.7°F (12.6°C) in October to a wintry 41.2°F (5.1°C). Weather in November »
Weather in December
December, the first month of the winter in Dayton, is also a subzero cold month, with an average temperature varying between 14.9°F (-9.5°C) and 28.8°F (-1.8°C). December, characterized by an average high temperature of 28.8°F (-1.8°C) and a low temperature of 14.9°F (-9.5°C), is generally the coldest month. Weather in December »
Updated: Jun 25, 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 is the most humid month?
The most humid month is January, with an average relative humidity of 90%.
How much does it rain in Dayton?
Throughout the year, there are 127.4 rainfall days, and 18.27" (464mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, September through December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 17.6 days and accumulates 16.73" (425mm) of snow.
How many days does it snow?
Throughout the year, there are 83.8 snowfall days, and 60.12" (1527mm) of snow is accumulated.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.8h of sunshine.
What is the month with the lowest UV index?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
What is the wettest month?
February is the month with the most rainfall. Rain falls for 10.9 days and accumulates 2.24" (57mm) of precipitation.
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 MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.
When it does not snow?
In Dayton, snow does not fall in June through August.
When are the longest days in Dayton?
The month with the longest days in Dayton is June, with an average of 15h and 12min of daylight.
What time of the year is the hottest?
Dayton reaches its average highest temperatures in July, measuring 84.4°F (29.1°C) at the peak and 53.8°F (12.1°C) at the lowest.
What is the driest month?
The month with the least rainfall is July, when the rain falls for 5.5 days and typically collects 0.35" (9mm) of precipitation.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 12h of sunshine.
What is the month with the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 6.
What is the least humid month?
The least humid month is August, with an average relative humidity of 38%.
What time of the year is the coldest?
December, recording an average high temperature of 28.8°F (-1.8°C) and a low temperature of 14.9°F (-9.5°C), is Dayton's coldest month.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Dayton, ID
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is December (28.8°F).
The month with the highest average low temperature is July (53.8°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Dayton, ID
- Average pressure in January:
30.3"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.15"Hg - Average pressure in December:
30.25"Hg
The month with the highest atmospheric pressure is January (30.3"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Dayton, ID
- Average wind speed in January:
4.2mph - Average wind speed in February:
4.8mph - Average wind speed in March:
5.3mph - Average wind speed in April:
5.8mph - Average wind speed in May:
5.5mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.7mph - Average wind speed in September:
5.4mph - Average wind speed in October:
4.8mph - Average wind speed in November:
4.8mph - Average wind speed in December:
4.5mph
The windiest month (with the highest average wind speed) is April (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.2mph).
Average humidity
Dayton, ID
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (38%).
Average rainfall
Dayton, ID
- Average rainfall in January:
2.2" - Average rainfall in February:
2.24" - Average rainfall in March:
2.09" - Average rainfall in April:
2.09" - Average rainfall in May:
2.17" - Average rainfall in June:
1.26"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.51" - Average rainfall in September:
1.14" - Average rainfall in October:
1.14" - Average rainfall in November:
1.26" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is February (2.24").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days
Dayton, ID
- Average rainfall days in January:
8.9 days - Average rainfall days in February:
10.9 days - Average rainfall days in March:
15.3 days - Average rainfall days in April:
16.6 days - Average rainfall days in May:
16.5 days - Average rainfall days in June:
9.9 days
- Average rainfall days in July:
5.5 days - Average rainfall days in August:
6.5 days - Average rainfall days in September:
7.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
9.6 days
The month with the highest number of rainy days is April (16.6 days).
The month with the least rainy days is July (5.5 days).
Average snowfall
Dayton, ID
- Average snowfall in January:
16.73" - Average snowfall in February:
12.95" - Average snowfall in March:
7.6" - Average snowfall in April:
2.8" - Average snowfall in May:
0.39" - Average snowfall in June:
0"
The month with the highest snowfall is January (16.73").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Dayton, ID
- Average snowfall days in January:
17.6 days - Average snowfall days in February:
17.6 days - Average snowfall days in March:
12.3 days - Average snowfall days in April:
6.5 days - Average snowfall days in May:
0.6 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:
0.1 days - Average snowfall days in October:
2.3 days - Average snowfall days in November:
9.5 days - Average snowfall days in December:
17.3 days
The months with the highest number of snowfall days are January and February (17.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Dayton, ID
- 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 1min - 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 and 5min - Average sunshine in February:
5h and 3min - Average sunshine in March:
7h and 2min - Average sunshine in April:
9h and 4min - Average sunshine in May:
10h and 4min - Average sunshine in June:
11h and 4min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
11h and 5min - Average sunshine in September:
10h and 0min - Average sunshine in October:
7h and 2min - Average sunshine in November:
6h and 3min - Average sunshine in December:
5h and 2min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days
Dayton, ID
- Average sunshine days in January:
12.6 days - Average sunshine days in February:
8.3 days - Average sunshine days in March:
8.8 days - Average sunshine days in April:
9.2 days - Average sunshine days in May:
10.1 days - Average sunshine days in June:
16.3 days
- Average sunshine days in July:
21.8 days - Average sunshine days in August:
21.1 days - Average sunshine days in September:
18.8 days - Average sunshine days in October:
18.3 days - Average sunshine days in November:
15.6 days - Average sunshine days in December:
11.2 days
The month with the most sunshine days is July (21.8 days).
The month with the least sunshine days is February (8.3 days).
Average UV index
Dayton, ID
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Dayton, ID
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility
Dayton, ID
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).