Measurements:
°C
°F
CURRENT WEATHER
19:45
Casper
32°F
SW 8 mph
Feels like: 26°F
Precip: 0%
World Resorts USA Casper Weather September Weather in Casper

Casper Weather: September

Average Day Temperature: 78.5°F
Average Night Temperature: 52.8°F
Number of Sunny Days: 23 days
Sunshine Hours: 11.8 - 13.2 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.3 in
detailed information

Air Temperature in September, °F

Select 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
120
Day Temperature   
Night Temperature

The highest day temperature in September 2024 was 93°F. The lowest night temperature was 33°F. The average values for day and night temperatures during September were 81.4°F и 51.2°F respectivly.

Sunny, Cloudy and Gloomy days
Sunny days
Cloudy days
Gloomy days
77%
17%
7%

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
0.2
0.3
0.5
0.7
0.8
1.0
1.2

Precipitation total in September for Casper is 0.3 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
2.3
4.5
6.8
9.0
11.3
13.5
15.8

The average wind speed in September is 9.4 mph. It makes September one of the most windless months of the year for Casper.

Average Sunny Hours Per Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
2.1
4.1
6.2
8.2
10.3
12.3
14.4

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Casper in September is 10.3 hours.

Best Time to Visit Casper
The most sunny months:
July 25 days
August 23 days
September 23 days
The most warm months:
July 89.3 °F
August 87.3 °F
June 79.6 °F
The most cold months:
January 25.9 °F
February 26.7 °F
December 32.5 °F
The most rainy months:
May 2 days
October 1 day
June 1 day
The most windy months:
December 13 mph
February 12 mph
November 12 mph
more details

Casper on the Weather Map

USA Resorts:
NAME
F°
Boston +36
Chicago +42
Hawaii +80
Honolulu +80
Houston +74
Las Vegas +66
Los Angeles +66
Miami +80
New York +46
Orlando +82
San Diego +60
San Francisco +54
Sarasota +78
Tampa +82
Washington +50
all resorts
24 Hours Weather Forecast
Casper
Local time: 19:45
01 apr, tuesday
2100 32°F
SW
8 mph
02 apr, wednesday
0000 28°F
SE
2 mph
0300 26°F
NE
6 mph
0600 26°F
E
13 mph
0900 32°F
SE
16 mph
1200 38°F
SE
17 mph
1500 42°F
S
14 mph
1800 40°F
SW
9 mph