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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 chilly winter month in Dayton, Oregon, with an average temperature ranging between min 35.1°F (1.7°C) and max 46°F (7.8°C). Dayton, Oregon, marks the onset of January with an average high-temperature of a still frosty 46°F (7.8°C), a subtle shift from December's 44.1°F (6.7°C). Weather in January »
Weather in February
February, the last month of the winter in Dayton, is another chilly month, with an average temperature ranging between min 35.1°F (1.7°C) and max 47.8°F (8.8°C). Dayton ushers in February with an average high-temperature of a still frosty 47.8°F (8.8°C), showing a close resemblance to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Dayton, is a fresh month, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 51.6°F (10.9°C). Dayton's weather, upon March's arrival, documents an average high-temperature of a fresh 51.6°F (10.9°C), nearly identical to the prior month. Weather in March »
Weather in April
April in Dayton, Oregon, is a moderate spring month, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 57.7°F (14.3°C). Observing a slight rise in April, the average high-temperature shifts from March's fresh 51.6°F (10.9°C) to a refreshing 57.7°F (14.3°C). Weather in April »
Weather in May
The last month of the spring, May, is an enjoyable month in Dayton, Oregon, with an average temperature varying between 43.3°F (6.3°C) and 66°F (18.9°C). In Dayton, stepping into May brings a gentle temperature nudge, moving slightly up from April's refreshing 57.7°F (14.3°C) to a comfortable 66°F (18.9°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Dayton, Oregon, with an average temperature varying between 47.8°F (8.8°C) and 71.2°F (21.8°C). Dayton's average high-temperature in June is a pleasant 71.2°F (21.8°C), marking an insignificant difference from the 66°F (18.9°C) of May. Weather in June »
Weather in July
July in Dayton, Oregon, is a warm summer month, with an average temperature ranging between min 52.3°F (11.3°C) and max 79.2°F (26.2°C). The start of July brings a subtle shift in the average high-temperature, edging up from June's pleasant 71.2°F (21.8°C) to a warm 79.2°F (26.2°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 81.1°F (27.3°C) and an average low of 54.3°F (12.4°C). August, on average, is the warmest month, registering a high temperature of 81.1°F (27.3°C) and a low of 54.3°F (12.4°C). During August, the heat index is calculated to be 84.2°F (29°C). Weather in August »
Weather in September
September, the first month of the autumn in Dayton, is also a moderately hot month, with an average temperature fluctuating between 50.5°F (10.3°C) and 73.4°F (23°C). As September arrives, Dayton's weather displays a minor decrease in high-temperatures, transitioning from August's warm 81.1°F (27.3°C) to a still moderately hot 73.4°F (23°C). Weather in September »
Weather in October
October, the same as September, is another comfortable autumn month in Dayton, Oregon, with an average temperature fluctuating between 45°F (7.2°C) and 61.2°F (16.2°C). Dayton in October experiences a subtle temperature decline, with average high-temperatures reducing from a moderately hot 73.4°F (23°C) in September to a refreshing 61.2°F (16.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a fresh month in Dayton, Oregon, with an average temperature fluctuating between 39.4°F (4.1°C) and 50.5°F (10.3°C). With the onset of November, Dayton experiences a modest temperature adjustment, with the average high-temperature receding from a refreshing 61.2°F (16.2°C) in October to a cool 50.5°F (10.3°C). Weather in November »
Weather in December
December, the first month of the winter in Dayton, is still a chilly month, with an average temperature varying between 44.1°F (6.7°C) and 34.3°F (1.3°C). December, having an average high-temperature of 44.1°F (6.7°C) and an average low-temperature of 34.3°F (1.3°C), is the coldest month. Weather in December »
[Resources]Frequently asked questions
How many days does it rain in Dayton?
Throughout the year, in Dayton, Oregon, there are 172.2 rainfall days, and 28.9" (734mm) of precipitation is accumulated.
When does it snow in Dayton?
Months with snowfall in Dayton are January through March, November and December.
How much does it snow in Dayton?
In Dayton, during the entire year, snow falls for 5.3 days and aggregates up to 3.19" (81mm) of snow.
When is the lowest UV index in Dayton?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Dayton.
What is the most humid month in Dayton?
The months with the highest humidity in Dayton, Oregon, are February and December, with an average relative humidity of 87%.
What is the snowiest month in Dayton?
The month with the most snowfall is February, when snow falls for 2 days and typically aggregates up to 1.38" (35mm) of snow.
What is the month with the least sunshine in Dayton?
February has the least sunshine of the year, with an average of 3.9h of sunshine.
When is Daylight Saving Time (DST) in Dayton?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Dayton, Oregon, 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 in Dayton?
April through October are months without snowfall.
When are the longest days in Dayton?
With an average of 15h and 36min of daylight, June has the longest days of the year.
What is the driest month in Dayton?
July and August are months with the least rain in Dayton when the rain falls for 4.8 days and typically aggregates up to 0.35" (9mm) of rain.
When is the highest UV index in Dayton?
The month with the highest UV index is July, with an average maximum UV index of 6.
What is the hottest time of year in Dayton?
In Dayton, the peak average temperatures are observed in August, with a high of 81.1°F (27.3°C) and a low of 54.3°F (12.4°C).
What is the least humid month in Dayton?
With an average relative humidity of 67%, August is the least humid month.
What month has the most sunshine in Dayton?
With an average of 10.8h of sunshine, August has the most sunshine of the year.
What is the coldest month in Dayton?
December is Dayton's coldest month, registering average high temperatures of 44.1°F (6.7°C) and lows of 34.3°F (1.3°C).
What is the rainiest month in Dayton?
The month with the most rainfall is December, when the rain falls for 19.3 days and typically aggregates up to 4.49" (114mm) of precipitation.
What is the month with the shortest days in Dayton?
The month with the shortest days in Dayton is December, with an average of 8h and 48min of daylight.
Average temperature
Dayton, OR
The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (44.1°F).
The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is December (34.3°F).
Average pressure
Dayton, OR
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.08"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.04"Hg
- Average pressure in July:
30.05"Hg - Average pressure in August:
30.01"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.06"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The months with the lowest atmospheric pressure are August and September (30.01"Hg).
Average wind speed
Dayton, OR
- Average wind speed in January:
5.1mph - Average wind speed in February:
5.1mph - Average wind speed in March:
5.2mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.3mph - Average wind speed in June:
4.2mph
- Average wind speed in July:
4.2mph - Average wind speed in August:
4mph - Average wind speed in September:
4.1mph - Average wind speed in October:
4.7mph - Average wind speed in November:
5.1mph - Average wind speed in December:
4.8mph
The windiest month (with the highest average wind speed) is March (5.2mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity
Dayton, OR
The months with the highest relative humidity are February and December (87%).
The month with the lowest relative humidity is August (67%).
Average rainfall
Dayton, OR
- Average rainfall in January:
4.41" - Average rainfall in February:
3.11" - Average rainfall in March:
3.43" - Average rainfall in April:
2.6" - Average rainfall in May:
1.65" - Average rainfall in June:
1.14"
- Average rainfall in July:
0.35" - Average rainfall in August:
0.35" - Average rainfall in September:
1.42" - Average rainfall in October:
2.8" - Average rainfall in November:
3.15" - Average rainfall in December:
4.49"
The wettest month (with the highest rainfall) is December (4.49").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days
Dayton, OR
- Average rainfall days in January:
18.2 days - Average rainfall days in February:
17.3 days - Average rainfall days in March:
19.8 days - Average rainfall days in April:
19.2 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
11.3 days
- Average rainfall days in July:
4.8 days - Average rainfall days in August:
4.6 days - Average rainfall days in September:
10.6 days - Average rainfall days in October:
15 days - Average rainfall days in November:
18.8 days - Average rainfall days in December:
19.3 days
The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (4.6 days).
Average snowfall
Dayton, OR
The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Dayton, OR
- Average snowfall days in January:
1 days - Average snowfall days in February:
2 days - Average snowfall days in March:
1.3 days - Average snowfall days in April:
0 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 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
0.5 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Dayton, OR
- 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 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 4min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 3min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 3min - Average sunshine in April:
7h and 1min - Average sunshine in May:
8h and 3min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 4min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days
Dayton, OR
- Average sunshine days in January:
10.6 days - Average sunshine days in February:
8.4 days - Average sunshine days in March:
9.3 days - Average sunshine days in April:
8.7 days - Average sunshine days in May:
15.8 days - Average sunshine days in June:
16.8 days
- Average sunshine days in July:
24.2 days - Average sunshine days in August:
24.1 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
14.6 days - Average sunshine days in November:
10.1 days - Average sunshine days in December:
9.7 days
The month with the most sunshine days is July (24.2 days).
The month with the least sunshine days is February (8.4 days).
Average UV index
Dayton, OR
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Dayton, OR
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility
Dayton, OR
The months with the highest visibility are July, August and September (6mi).
The months with the lowest visibility are January, February and December (4mi).
Dayton, Oregon, USA
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