January weather forecastFlagstaff, AZ
January
Weather in January
In Flagstaff, January is marked by winter conditions with the lowest temperatures of the year. The city experiences an average high of just 42.6°F (5.9°C) and a chilling average low of 25.2°F (-3.8°C). Snowfall is prevalent, leading to picturesque landscapes and drawing winter sports enthusiasts. Despite the chilly temperatures, January sees relatively less cloud cover, thereby prolonging sunny hours. The UV index remains fairly low enabling sights and outdoor activities without excessive exposure to harmful rays.Temperature
The lowest level of Flagstaff's temperatures is noted during January and December, averaging a high-temperature of 42.6°F (5.9°C).Humidity
The most humid month is January, with an average relative humidity of 66%.Rainfall
In January, the rain falls for 3.4 days. Throughout January, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Flagstaff, Arizona, there are 74.8 rainfall days, and 12.56" (319mm) of precipitation is accumulated.Snowfall
Months with snowfall in Flagstaff are January through May, October through December. In January, it is snowing for 6.1 days. Throughout January, 4.65" (118mm) of snow is accumulated. Throughout the year, in Flagstaff, Arizona, there are 30.6 snowfall days, and 28.66" (728mm) of snow is accumulated.Daylight
In January, the average length of the day is 10h and 7min.On the first day of January, sunrise is at 7:34 am and sunset at 5:25 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:53 pm MST.
Sunshine
In Flagstaff, the average sunshine in January is 6.9h.UV index
The months with the lowest UV index in Flagstaff 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 unsafe exposure to UV radiation for the ordinary person.Note: In January, an average UV index of 2 transforms into the following instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Flagstaff, AZ
- Average high temperature in January: 42.6°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The months with the lowest average high temperature are January and December (42.6°F).
- Average low temperature in January: 25.2°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).
Average pressure in January
Flagstaff, AZ
- 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 (29.86"Hg).
Average wind speed in January
Flagstaff, AZ
- Average wind speed in January: 6.5mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in January
Flagstaff, AZ
- Average humidity in January: 66%
The month with the highest relative humidity is January (66%).
The month with the lowest relative humidity is June (24%).
Average rainfall in January
Flagstaff, AZ
- Average rainfall in January: 0.79"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is June (0.24").
Average rainfall days in January
Flagstaff, AZ
- Average rainfall days in January: 3.4 days
The month with the highest number of rainy days is July (16.2 days).
The months with the least rainy days are February and November (2.5 days).
Average snowfall in January
Flagstaff, AZ
- Average snowfall in January: 4.65"
The month with the highest snowfall is December (7.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in January
Flagstaff, AZ
- Average snowfall days in January: 6.1 days
The month with the highest number of snowfall days is December (7.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in January /
Average sunshine in January
Flagstaff, AZ
- Average daylight in January: 10h and 6min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January: 6h and 54min
The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in January
Flagstaff, AZ
- Average sunshine days in January: 23.4 days
The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in January
Flagstaff, AZ
- 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
Flagstaff, AZ
- Average cloud cover in January: 23
The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).
Average visibility in January
Flagstaff, AZ
- 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).
