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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, in Dayton, Washington, is another cold winter month, with an average temperature fluctuating between 38.3°F (3.5°C) and 27.7°F (-2.4°C). January's presence marks an average high-temperature of a still wintry 38.3°F (3.5°C), subtly varied from December's 36.5°F (2.5°C). Weather in January »
Weather in February
February, the last month of the winter in Dayton, is also a wintry month, with temperature in the range of an average high of 41.4°F (5.2°C) and an average low of 29.7°F (-1.3°C). The transition from January to February sees an average high-temperature of a still wintry 41.4°F (5.2°C), indicating a minor variance from the prior month. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Dayton, Washington, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 48.2°F (9°C). The transition from February to March brings a subtle temperature rise, with average high-temperatures increasing from a wintry 41.4°F (5.2°C) to a frosty 48.2°F (9°C). Weather in March »
Weather in April
April is a refreshing spring month in Dayton, Washington, with an average temperature ranging between min 37.9°F (3.3°C) and max 55.8°F (13.2°C). With the onset of April, the average high-temperature subtly transitions from a chilly 48.2°F (9°C) in March to a mild 55.8°F (13.2°C). Weather in April »
Weather in May
May, the last month of the spring in Dayton, is a refreshing month, with temperature in the range of an average high of 65.3°F (18.5°C) and an average low of 44.2°F (6.8°C). Dayton in May sees a temperature change, with average high-temperatures moving from 55.8°F (13.2°C) in April to a still refreshing 65.3°F (18.5°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Dayton, Washington, with an average temperature fluctuating between 72.1°F (22.3°C) and 50.4°F (10.2°C). The commencement of June sees a minor shift in the average high-temperature, moving from a refreshing 65.3°F (18.5°C) in May to a pleasant 72.1°F (22.3°C). Weather in June »
Weather in July
July is a warm summer month in Dayton, Washington, with an average temperature fluctuating between 58.6°F (14.8°C) and 83.5°F (28.6°C). Dayton sees an increase in average high-temperatures during July, moving from an agreeable 72.1°F (22.3°C) in June to a moderately hot 83.5°F (28.6°C). Weather in July »
Weather in August
August, the last month of the summer in Dayton, is also a moderately hot month, with temperature in the range of an average high of 83.7°F (28.7°C) and an average low of 60.3°F (15.7°C). August proves to be the warmest month, recording an average peak temperature of 83.7°F (28.7°C) and a minimum temperature of 60.3°F (15.7°C). Weather in August »
Weather in September
September, the first month of the autumn in Dayton, is still a warm month, with an average temperature varying between 73.4°F (23°C) and 53.2°F (11.8°C). Dayton's weather changes with the onset of September, slightly falling from 83.7°F (28.7°C) in August to a still moderately hot 73.4°F (23°C). Weather in September »
Weather in October
October, the same as September, in Dayton, Washington, is another refreshing autumn month, with an average temperature ranging between max 58.8°F (14.9°C) and min 43.7°F (6.5°C). October's onset is marked by a clear temperature decrease, falling from a warm 73.4°F (23°C) in September to a moderate 58.8°F (14.9°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 34°F (1.1°C) and 46.2°F (7.9°C). November brings a decrease in the average high-temperature, falling from October's refreshing 58.8°F (14.9°C) to a frosty 46.2°F (7.9°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Dayton, Washington, with an average temperature varying between 36.5°F (2.5°C) and 25.7°F (-3.5°C). With average temperatures fluctuating between a high of 36.5°F (2.5°C) and a low of 25.7°F (-3.5°C), December stands out as the coldest month. Weather in December »
Updated: Aug 5, 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?
January is the most humid month, with an average relative humidity of 81%.
How much does it rain?
Throughout the year, there are 144.3 rainfall days, and 15.75" (400mm) of precipitation is accumulated.
When does it snow?
Months with snowfall are January through May, September, November and December.
How many days does it snow?
In Dayton, during the entire year, snow falls for 28.4 days and aggregates up to 13.58" (345mm) of snow.
What is the month with the least sunshine in Dayton?
The month with the least sunshine is January, with an average of 5.1h of sunshine.
When is the lowest UV index in Dayton?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 7.7 days and typically aggregates up to 4.53" (115mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow?
June through August and October are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 15h and 42min of daylight.
What is the driest month?
The months with the least rainfall are July and August Rain falls for 5.3 days and accumulates 0.35" (9mm) of rain.
What are the months with the most sunshine?
The months with the most sunshine are July and August, with an average of 12h of sunshine.
When is the highest UV index in Dayton?
With an average maximum UV index of 7, July is the month with the highest UV index.
What part of the year is the hottest in Dayton?
August is Dayton's warmest month, registering average high temperatures of 83.7°F (28.7°C) and lows of 60.3°F (15.7°C).
What is the least humid month in Dayton?
The least humid month is August, with an average relative humidity of 39%.
What part of the year is the coldest?
December is the coldest month, exhibiting average temperatures of 36.5°F (2.5°C) at the peak and 25.7°F (-3.5°C) at the base.
What is the wettest month?
December is the month with the most rainfall. Rain falls for 13.6 days and accumulates 2.05" (52mm) of precipitation.
What is the month with the shortest days?
With an average of 8h and 42min of daylight, December has the shortest days of the year.
Average temperature
Dayton, WA
The warmest month (with the highest average high temperature) is August (83.7°F).
The month with the lowest average high temperature is December (36.5°F).
The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).
Average pressure
Dayton, WA
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.9"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).
Average wind speed
Dayton, WA
- Average wind speed in January:
7.1mph - Average wind speed in February:
7.6mph - Average wind speed in March:
8.3mph - Average wind speed in April:
8.6mph - Average wind speed in May:
7.1mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.9mph - Average wind speed in August:
6.5mph - Average wind speed in September:
6.3mph - Average wind speed in October:
6.9mph - Average wind speed in November:
7.3mph - Average wind speed in December:
6.8mph
The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is September (6.3mph).
Average humidity
Dayton, WA
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall
Dayton, WA
- Average rainfall in January:
1.89" - Average rainfall in February:
1.65" - Average rainfall in March:
1.89" - Average rainfall in April:
1.38" - Average rainfall in May:
1.77" - Average rainfall in June:
1.18"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.35" - Average rainfall in September:
0.59" - Average rainfall in October:
1.22" - Average rainfall in November:
1.42" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is December (2.05").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days
Dayton, WA
- Average rainfall days in January:
15.3 days - Average rainfall days in February:
12.9 days - Average rainfall days in March:
17.6 days - Average rainfall days in April:
16 days - Average rainfall days in May:
13.6 days - Average rainfall days in June:
10.9 days
- Average rainfall days in July:
5.3 days - Average rainfall days in August:
5.9 days - Average rainfall days in September:
7.3 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
13.7 days - Average rainfall days in December:
13.6 days
The month with the highest number of rainy days is March (17.6 days).
The month with the least rainy days is July (5.3 days).
Average snowfall
Dayton, WA
- Average snowfall in January:
3.23" - Average snowfall in February:
4.53" - Average snowfall in March:
1.06" - Average snowfall in April:
0.31" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and October (0").
Average snowfall days
Dayton, WA
- Average snowfall days in January:
6.2 days - Average snowfall days in February:
7.7 days - Average snowfall days in March:
3.1 days - Average snowfall days in April:
1 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:
0.1 days - Average snowfall days in October:
0.2 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
7.6 days
The month with the highest number of snowfall days is February (7.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Dayton, WA
- Average daylight in January:
9h and 1min - Average daylight in February:
10h and 2min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 0min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 2min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
5h and 2min - Average sunshine in March:
7h and 1min - Average sunshine in April:
9h and 5min - Average sunshine in May:
10h and 4min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 0min - Average sunshine in September:
10h and 3min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 0min - Average sunshine in December:
5h and 2min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days
Dayton, WA
- Average sunshine days in January:
12.2 days - Average sunshine days in February:
10 days - Average sunshine days in March:
10.4 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
14 days - Average sunshine days in June:
16.2 days
- Average sunshine days in July:
24 days - Average sunshine days in August:
21.8 days - Average sunshine days in September:
20.7 days - Average sunshine days in October:
17 days - Average sunshine days in November:
13.4 days - Average sunshine days in December:
12.8 days
The month with the most sunshine days is July (24 days).
The month with the least sunshine days is February (10 days).
Average UV index
Dayton, WA
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Dayton, WA
The months with the most cloud cover are January and February (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 11).
Average visibility
Dayton, WA
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).
Dayton, Washington, USA
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