World Resorts USA Idaho Falls Weather

Idaho Falls weather in September

Weather in Idaho Falls: September

Average day temperature: 75.6°F
Average night temperature: 52.4°F
Number of sunny days: 22 days
Day length: 11.8 - 13.2 hours
Number of rainy days: 1 day
Precipitation totals: 0.6 in.

Air temperature in September, °F

Show year:
2024
2023
2022
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
0
15
30
45
60
75
90
105
Day temperature   
Night temperature

The highest day temperature during September of 2024 was 87°F. At the same time the lowest night temperature was 41°F. Daily and nightly averages during September were 75.0°F and 49.5°F.

Sunny, partly cloudy and cloudy days
Sunny days
Partly cloudy days
Cloudy days
73%
20%
7%

Mostly all days in September are sunny but cloudy days are also possible.

Precipitation total in September, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.2
0.4
0.5
0.7
0.9
1.1
1.2
1.4
1.0
1.0

Precipitation total value in Idaho Falls in September is 0.6 in. Other months of the year show relatively similar values.

Wind speed in September, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.6
3.2
4.8
6.4
8.0
9.5
11.1
12.7
6.3
7.1
7.7
7.4
7.4
8.8
9.0
9.3
7.3
6.6
5.1
6.3
7.1
7.7
7.5
7.4
7.4
8.8
9.0
9.3
7.3
6.6
5.1

The average wind speed value in September is 7.5 mph

Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
2.2
4.4
6.6
8.8
11.0
13.2
15.4
17.6
3.2
4.4
7.4
10.7
12.9
12.1
9.1
8.3
6.0
4.0
3.7
3.2
4.4
7.4
10.0
10.7
12.9
12.1
9.1
8.3
6.0
4.0
3.7

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 September is: 10.0.

Best time for vacation in Idaho Falls

Sunniest months:
July 27 days
June 22 days
August 22 days
Warmest months:
July 88.3 °F
August 84.1 °F
September 75.6 °F
Coldest months:
January 25.0 °F
February 27.9 °F
December 29.3 °F
Rainiest months:
March 2 days
September 1 day
October 1 day
Windiest months:
April 9.3 mph
May 9.0 mph
June 8.8 mph

Idaho Falls on a weather map

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+39°F
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+66°F
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+45°F
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24 Hours Forecast
Idaho Falls
Local time: 23:18
April 06, sunday
0000
30°F
N
6 mph
0300
28°F
N
6 mph
0600
28°F
NW
5 mph
0900
39°F
N
3 mph
1200
54°F
NE
8 mph
1500
59°F
NE
7 mph
1800
57°F
NE
6 mph
2100
43°F
NW
8 mph
Units of measurement: °C / °F