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
With the onset of January, the average high-temperature stands at an icy 32°F (0°C), closely aligned with December's 31.6°F (-0.2°C). January nights are marked by an average low-temperature of 21.9°F (-5.6°C).Humidity
January is the most humid month in Hartline, with an average relative humidity of 89%.Rainfall
In Hartline, Washington, during January, the rain falls for 9.7 days and regularly aggregates up to 1.14" (29mm) of precipitation. In Hartline, during the entire year, the rain falls for 102.1 days and collects up to 9.65" (245mm) of precipitation.Snowfall
Months with snowfall are January through April, September through December. The month with the most snowfall in Hartline is January, when snow falls for 8.4 days and typically aggregates up to 4.41" (112mm) of snow.Daylight
In January, the average length of the day in Hartline is 8h and 57min.On the first day of January in Hartline, Washington, sunrise is at 7:44 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:55 pm PST.
Sunshine
With an average of 4.1h of sunshine, January has the least sunshine of the year in Hartline.UV index
In January, the average daily maximum UV index is 2. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 in January interprets into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Boost your sun resistance with garments that are densely woven yet spacious. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
How cold is January in Hartline?
What is the most humid month in Hartline?
What is the average humidity in January in Hartline?
How much does it rain in Hartline in January?
What is the snowiest month in Hartline?
How much does it snow in Hartline in January?
How many hours of daylight does Hartline have in January?
When are sunrise and sunset in January in Hartline?
What is the month with the least sunshine in Hartline?
How many hours of sunshine does Hartline have in January?
What is the UV index intensity in January in Hartline?
Average temperature in January
Hartline, WA
- Average high temperature in January: 32°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is December (31.6°F).
- Average low temperature in January: 21.9°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in January
Hartline, WA
- Average pressure in January: 30.18"Hg
The month with the highest atmospheric pressure is January (30.18"Hg).
The month with the lowest atmospheric pressure is August (29.91"Hg).
Average wind speed in January
Hartline, WA
- Average wind speed in January: 4.9mph
The windiest month (with the highest average wind speed) is April (7mph).
The calmest month (with the lowest average wind speed) is January (4.9mph).
Average humidity in January
Hartline, WA
- Average humidity in January: 89%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (36%).
Average rainfall in January
Hartline, WA
- Average rainfall in January: 1.14"
The wettest months (with the highest rainfall) are May and December (1.18").
The driest months (with the least rainfall) are July and August (0.2").
Average rainfall days in January
Hartline, WA
- Average rainfall days in January: 9.7 days
The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in January
Hartline, WA
- Average snowfall in January: 4.41"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are May, June, July and August (0").
Average snowfall days in January
Hartline, WA
- Average snowfall days in January: 8.4 days
The month with the highest number of snowfall days is December (10.5 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Hartline, WA
- Average daylight in January: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January: 4h and 1min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in January
Hartline, WA
- Average sunshine days in January: 16 days
The month with the most sunshine days is August (25.8 days).
The month with the least sunshine days is March (14.7 days).
Average UV index in January
Hartline, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in January
Hartline, WA
- Average cloud cover in January: 55
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in January
Hartline, WA
- Average visibility in January: 4mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and December (4mi).
Hartline, Washington, USA
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