Annual mean 7°C · wettest around May · prevailing wind SW
Warmest
29.3 °C
Coldest
-4.6 °C
Wettest
8%
Windiest
6.3 m/s
Prevailing
SW
4.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Idaho Falls over the whole year is 7°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -8°C. Idaho Falls has no sharply defined rainy season: the chance of rain on a given day runs from 1% in July, the driest month, to 5% in May, the wettest. Winds in Idaho Falls are highest in April, averaging 4.6 m/s (17 km/h), and lightest in January, at 3.3 m/s (12 km/h). The prevailing wind is from the SW. The clearest skies in Idaho Falls come in July, when the sky is typically 11% covered; January is the cloudiest month, at 64%.
Month by month Idaho Falls climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-4°C
-8°C
-10°C
5%
64%
3.3 m/s
0
0
0
February
-2°C
-7°C
-8°C
5%
60%
4.1 m/s
0
0
0
March
5°C
-2°C
-1°C
4%
48%
4.1 m/s
1
0
13
April
12°C
2°C
5°C
4%
43%
4.6 m/s
8
0
45
May
17°C
8°C
12°C
5%
38%
4.2 m/s
42
3
72
June
23°C
12°C
19°C
3%
21%
4.2 m/s
74
18
67
July
29°C
15°C
25°C
1%
11%
3.6 m/s
70
62
31
August
28°C
13°C
24°C
3%
16%
3.5 m/s
76
48
43
September
22°C
8°C
17°C
5%
22%
3.3 m/s
65
16
71
October
13°C
2°C
8°C
5%
33%
3.7 m/s
24
0
56
November
5°C
-3°C
-0°C
3%
44%
3.5 m/s
1
0
18
December
-3°C
-7°C
-8°C
5%
64%
3.4 m/s
0
0
1
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Idaho Falls weather by season
Year round, Idaho Falls has days of about -4°C at their warmest in January, its coolest month, and 29°C in July, its warmest; the coolest hours of the day run from -8°C to 15°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around May and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Idaho Falls weather in winterDecember to February
High -3°CLow -7°CRain 5%
Winter in Idaho Falls has typical daily highs of about -3°C and lows of about -7°C, with a 5% chance of rain on a given day.
Idaho Falls weather in springMarch to May
High 11°CLow 3°CRain 5%
Spring in Idaho Falls has typical daily highs of about 11°C and lows of about 3°C, with a 5% chance of rain on a given day.
Idaho Falls weather in summerJune to August
High 27°CLow 13°CRain 2%
Summer in Idaho Falls has typical daily highs of about 27°C and lows of about 13°C, with a 2% chance of rain on a given day.
Idaho Falls weather in autumnSeptember to November
High 13°CLow 2°CRain 4%
Autumn in Idaho Falls has typical daily highs of about 13°C and lows of about 2°C, with a 4% chance of rain on a given day.
When is the rainy season in Idaho Falls?
Idaho Falls has no sharply defined rainy season: the chance of rain on a given day runs from 1% in July, the driest month, to 5% in May, the wettest.
What time of year is Idaho Falls windiest?
Winds in Idaho Falls are highest in April, averaging 4.6 m/s (17 km/h), and lightest in January, at 3.3 m/s (12 km/h). The prevailing wind is from the SW.
What is the average temperature in Idaho Falls year round?
The average temperature in Idaho Falls over the whole year is 7°C. July is the hottest month, with highs of about 29°C; January is the coldest, with lows of about -8°C.