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
January's weather records an average high-temperature of a still wintry 33.3°F (0.7°C), showing little deviation from December. The nighttime temperature dips to a subzero cold 22.6°F (-5.2°C) on average during January.Humidity
The most humid month is January, with an average relative humidity of 91%.Rainfall
The month with the most rainfall is January, when the rain falls for 9.7 days and typically aggregates up to 2.28" (58mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. The month with the most snowfall is January, when snow falls for 13.3 days and typically aggregates up to 10.51" (267mm) of snow.Daylight
In January, the average length of the day is 8h and 58min.On the first day of January, sunrise is at 7:35 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 4:47 pm PST.
Sunshine
January and December, with an average of 3.8h of sunshine, are months with the least sunshine.UV index
In Rockford, Washington, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 2 in January transforms into this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in January?
What is the most humid month?
What is the average humidity in January?
What is the wettest month?
How many days does it rain in January?
What is the snowiest month?
How much does it snow in January?
How many hours of daylight does Rockford have in January?
What time are sunrise and sunset in January in Rockford?
What is the month with the least sunshine?
How long on average sun shines in January?
How high is the UV index in January?
Average temperature in January
Rockford, WA
- Average high temperature in January: 33.3°F
The warmest month (with the highest average high temperature) is August (83.3°F).
The month with the lowest average high temperature is December (32°F).
- Average low temperature in January: 22.6°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in January
Rockford, 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 (29.91"Hg).
Average wind speed in January
Rockford, WA
- Average wind speed in January: 4.8mph
The windiest month (with the highest average wind speed) is April (6.1mph).
The calmest month (with the lowest average wind speed) is December (4.7mph).
Average humidity in January
Rockford, WA
- Average humidity in January: 91%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (43%).
Average rainfall in January
Rockford, WA
- Average rainfall in January: 2.28"
The wettest month (with the highest rainfall) is January (2.28").
The driest months (with the least rainfall) are July and August (0.35").
Average rainfall days in January
Rockford, WA
- Average rainfall days in January: 9.7 days
The month with the highest number of rainy days is March (16 days).
The month with the least rainy days is July (5.1 days).
Average snowfall in January
Rockford, WA
- Average snowfall in January: 10.51"
The month with the highest snowfall is January (10.51").
The months with the least snowfall are June, July and August (0").
Average snowfall days in January
Rockford, WA
- Average snowfall days in January: 13.3 days
The month with the highest number of snowfall days is December (13.9 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Rockford, WA
- Average daylight in January: 9h and 0min
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: 3h and 5min
The month with the most sunshine is August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in January
Rockford, WA
- Average sunshine days in January: 13.2 days
The month with the most sunshine days is July (24.3 days).
The month with the least sunshine days is March (10.3 days).
Average UV index in January
Rockford, WA
- Average UV index in January: 2
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in January
Rockford, WA
- Average cloud cover in January: 62
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 13).
Average visibility in January
Rockford, WA
- Average visibility in January: 4mi
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Rockford, Washington, USA
Weather forecast for your location
2. Allow the app to use your location