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
Johnstown's weather, upon January's arrival, documents an average high-temperature of a still icy 41.5°F (5.3°C), nearly identical to the prior month. January nights in Johnstown, Colorado, observe an average temperature dip to a freezing cold 22.6°F (-5.2°C).Humidity
January, February and December, with an average relative humidity of 63%, are the most humid months in Johnstown.Rainfall
January and December are months with the least rain when the rain falls for 5.3 days and typically aggregates up to 0.39" (10mm) of rain.Snowfall
January through May, October through December are months with snowfall in Johnstown. In Johnstown, during January, snow falls for 6.8 days and regularly aggregates up to 2.64" (67mm) of snow. Throughout the year, in Johnstown, there are 41 snowfall days, and 25.51" (648mm) of snow is accumulated.Daylight
In Johnstown, the average length of the day in January is 9h and 41min.On the first day of the month, sunrise is at 7:22 am and sunset at 4:43 pm. On the last day of January, in Johnstown, sunrise is at 7:09 am and sunset at 5:16 pm MST.
Sunshine
In January, the average sunshine is 7h.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 low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 2 in January transforms into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Around midday, solar radiation is most harmful; hence, exposure should be limited. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Johnstown during January?
What are the most humid months in Johnstown?
What is the average humidity in January in Johnstown?
What is the driest month in Johnstown?
How much does it rain in Johnstown in January?
How many days does it snow in January in Johnstown?
What is the average length of the day in January in Johnstown?
When are sunrise and sunset in January in Johnstown?
How many hours of sunshine does Johnstown have in January?
What are the months with the lowest UV index in Johnstown?
What is the UV index reading in January in Johnstown?
Average temperature in January
Johnstown, CO
- Average high temperature in January: 41.5°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (39.4°F).
- Average low temperature in January: 22.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in January
Johnstown, CO
- Average pressure in January: 30.14"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in January
Johnstown, CO
- Average wind speed in January: 6mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in January
Johnstown, CO
- Average humidity in January: 63%
The months with the highest relative humidity are January, February and December (63%).
The months with the lowest relative humidity are August and September (42%).
Average rainfall in January
Johnstown, CO
- Average rainfall in January: 0.39"
The wettest month (with the highest rainfall) is May (2.13").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in January
Johnstown, CO
- Average rainfall days in January: 5.3 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (3.7 days).
Average snowfall in January
Johnstown, CO
- Average snowfall in January: 2.64"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Johnstown, CO
- Average snowfall days in January: 6.8 days
The month with the highest number of snowfall days is February (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Johnstown, CO
- Average daylight in January: 9h and 4min
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 month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in January
Johnstown, CO
- Average sunshine days in January: 22.4 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in January
Johnstown, 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
Johnstown, CO
- Average cloud cover in January: 23
The month with the most cloud cover is April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in January
Johnstown, 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).
Johnstown, Colorado, USA
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