January weather forecastNorthglenn, CO
January
Weather in January
Snow-filled scenes are a signature of January weather in Northglenn, Colorado. January offers the coldest temperatures with a high of 42.4°F (5.8°C) and low of 23.2°F (-4.9°C). The city often lies under a blanket of snow, with the frequent snow dustings lending a serene, postcard-like aesthetic. This is also the month with the shortest daylight duration, making it ideal for those who enjoy long nights. It is a perfect time for skiing and other winter sports, thanks to the frosty weather.Temperature
The advent of January in Northglenn brings an average high-temperature of a still icy 42.4°F (5.8°C), almost identical to the preceding month. Throughout January, Northglenn encounters an average temperature drop to a freezing cold 23.2°F (-4.9°C).Humidity
In January, the average relative humidity in Northglenn is 62%.Rainfall
January and December are months with the least rain when the rain falls for 2.3 days and typically aggregates up to 0.08" (2mm) of rain.Snowfall
Months with snowfall in Northglenn are January through May, October through December. In Northglenn, Colorado, in January, during 3.2 snowfall days, 0.71" (18mm) of snow is typically accumulated. In Northglenn, during the entire year, snow falls for 19.6 days and aggregates up to 8.5" (216mm) of snow.Daylight
In January, the average length of the day in Northglenn is 9h and 44min.On the first day of the month, sunrise is at 7:21 am and sunset at 4:45 pm. On the last day of January, in Northglenn, sunrise is at 7:09 am and sunset at 5:17 pm MST.
Sunshine
In January, the average sunshine in Northglenn is 7h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 2 in January transforms into the following instructions:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. 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. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Northglenn, CO
- Average high temperature in January: 42.4°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in January: 23.2°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in January
Northglenn, 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
Northglenn, CO
- Average wind speed in January: 6.1mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in January
Northglenn, CO
- Average humidity in January: 62%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).
Average rainfall in January
Northglenn, CO
- Average rainfall in January: 0.08"
The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").
Average rainfall days in January
Northglenn, CO
- Average rainfall days in January: 2.3 days
The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).
Average snowfall in January
Northglenn, CO
- Average snowfall in January: 0.71"
The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Northglenn, CO
- Average snowfall days in January: 3.2 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
Northglenn, CO
- Average daylight in January: 9h and 42min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 7h and 0min
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 42min).
Average sunshine days in January
Northglenn, CO
- Average sunshine days in January: 27.4 days
The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).
Average UV index in January
Northglenn, 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
Northglenn, CO
- Average cloud cover in January: 21
The months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in January
Northglenn, 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).








