January weather forecastArvada, CO
January
Weather in January
January, the same as December, is a wintry winter month in Arvada, Colorado, with an average temperature ranging between max 40.6°F (4.8°C) and min 21.6°F (-5.8°C).Temperature
January records an average high-temperature of a still wintry 40.6°F (4.8°C), indicating a minor variation from the preceding month. During the month of January, the temperature generally drops to a low average of 21.6°F (-5.8°C).Humidity
In Arvada, the average relative humidity in January is 64%.Rainfall
The month with the least rainfall in Arvada is January, when the rain falls for 4.3 days and typically collects 0.35" (9mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Arvada, during January, snow falls for 6.5 days and regularly aggregates up to 2.76" (70mm) of snow. In Arvada, Colorado, during the entire year, snow falls for 40.9 days and aggregates up to 32.17" (817mm) of snow.Daylight
The average length of the day in January is 9h and 44min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:46 pm. On the last day of January, sunrise is at 7:09 am and sunset at 5:18 pm MST.
Sunshine
In Arvada, the average sunshine in January is 7.1h.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 vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 2 in January translates into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Arvada, CO
- Average high temperature in January: 40.6°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (39.6°F).
- Average low temperature in January: 21.6°F
The month with the highest average low temperature is July (59.5°F).
The coldest months (with the lowest average low temperature) are February and December (20.7°F).
Average pressure in January
Arvada, CO
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in January
Arvada, CO
- Average wind speed in January: 6.2mph
The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).
Average humidity in January
Arvada, CO
- Average humidity in January: 64%
The month with the highest relative humidity is February (66%).
The months with the lowest relative humidity are June and August (41%).
Average rainfall in January
Arvada, CO
- Average rainfall in January: 0.35"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in January
Arvada, CO
- Average rainfall days in January: 4.3 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (3.3 days).
Average snowfall in January
Arvada, CO
- Average snowfall in January: 2.76"
The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Arvada, CO
- Average snowfall days in January: 6.5 days
The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Arvada, CO
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 7h and 6min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in January
Arvada, CO
- Average sunshine days in January: 22.3 days
The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in January
Arvada, CO
- Average UV index in January: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
Arvada, CO
- Average cloud cover in January: 20
The month with the most cloud cover is April (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in January
Arvada, CO
- 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).
