World Resorts USA Boise Weather

Boise weather in January

Weather in Boise: January

Average day temperature: 34.6°F
Average night temperature: 28.1°F
Number of sunny days: 9 days
Day length: 9.0 - 9.9 hours
Number of days with precipitation: 2 days
Precipitation totals: 0.7 in.

Air temperature in January, °F

Show year:
2026
2025
2024

The highest day temperature during January of 2026 was 52°F. At the same time the lowest night temperature was 20°F. Daily and nightly averages during January were 39.4°F and 31.2°F.

Sunny, partly cloudy and cloudy days

Mostly all days in January are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in January, in.

Precipitation total value in Boise in January is 0.7 in. Other months of the year show relatively similar values.

Wind speed in January, mph

The average wind speed value in January is 5.3 mph It makes January lest windy month of the year.

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in January is: 4.7.

Best time for vacation in Boise

Sunniest months:
July 28 days
August 26 days
September 24 days
Warmest months:
July 88.8 °F
August 86.0 °F
September 77.7 °F
Coldest months:
January 34.6 °F
February 37.6 °F
December 37.9 °F
Rainiest months:
December 3 days
November 2 days
May 2 days
Windiest months:
May 7.5 mph
April 7.4 mph
March 7.2 mph

Boise on a weather map

Boise
+55°F
S 2 mph
Feels like: +55°F
Precip.: 0%
Places in USA:
Name
°F
+19°F
+77°F
+77°F
+73°F
+75°F
+52°F
+55°F
+72°F
+16°F
+63°F
+66°F
+50°F
+46°F
+64°F
+27°F
24 Hours Forecast
Boise
Local time: 17:36
February 05, thursday
1800
55°F
S
2 mph
2100
45°F
SW
2 mph
February 06, friday
0000
39°F
NW
2 mph
0300
37°F
W
2 mph
0600
39°F
NW
2 mph
0900
39°F
N
1 mph
1200
48°F
SE
1 mph
1500
54°F
NE
2 mph
Units of measurement: °C / °F