Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average snowfall in January
- Average snowfall days in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
The transition from December to January sees an average high-temperature of a still cold 38.3°F (3.5°C), indicating a minor variance from the prior month. The mean low-temperature during January nights in Dayton is a subzero cold 27.7°F (-2.4°C).Humidity
With an average relative humidity of 81%, January is the most humid month.Rainfall
In Dayton, in January, it is raining for 15.3 days, with typically 1.89" (48mm) of accumulated precipitation. Throughout the year, in Dayton, there are 144.3 rainfall days, and 15.75" (400mm) of precipitation is accumulated.Snowfall
January through May, September, November and December are months with snowfall in Dayton. In Dayton, in January, during 6.2 snowfall days, 3.23" (82mm) of snow is typically accumulated. Throughout the year, in Dayton, there are 28.4 snowfall days, and 13.58" (345mm) of snow is accumulated.Daylight
In January, the average length of the day is 9h and 6min.On the first day of the month, sunrise is at 7:34 am and sunset at 4:15 pm. On the last day of January, in Dayton, sunrise is at 7:16 am and sunset at 4:54 pm PST.
Sunshine
With an average of 5.1h of sunshine, January has the least sunshine of the year in Dayton.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.Note: In January, the average maximum UV index of 2 translates into the following recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Frequently asked questions
Is January cold in Dayton?
What is the most humid month in Dayton?
What is the average humidity in January in Dayton?
How much does it rain in Dayton in January?
How many days does it snow in January in Dayton?
How many hours of daylight does Dayton have in January?
What time are sunrise and sunset in January in Dayton?
What is the month with the least sunshine in Dayton?
How many hours of sunshine does Dayton have in January?
What are the months with the lowest UV index in Dayton?
How high is the UV index in January in Dayton?
Average temperature in January
Dayton, WA
- Average high temperature in January: 38.3°F
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).
- Average low temperature in January: 27.7°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 in January
Dayton, WA
- Average pressure in January: 30.19"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 in January
Dayton, WA
- Average wind speed in January: 7.1mph
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 in January
Dayton, WA
- Average humidity in January: 81%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (39%).
Average rainfall in January
Dayton, WA
- Average rainfall in January: 1.89"
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 in January
Dayton, WA
- Average rainfall days in January: 15.3 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 in January
Dayton, WA
- Average snowfall in January: 3.23"
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 in January
Dayton, WA
- Average snowfall days in January: 6.2 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 in January /
Average sunshine in January
Dayton, WA
- Average daylight in January: 9h and 1min
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
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 in January
Dayton, WA
- Average sunshine days in January: 12.2 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 in January
Dayton, WA
- Average UV index in January: 2
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 in January
Dayton, WA
- Average cloud cover in January: 47
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 in January
Dayton, WA
- Average visibility in January: 6mi
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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