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Weather Casper: Current forecast

Casper / Wyoming (WY) / United States

26.2 °C
Feels like 17.8 °C
Min 12 °C / Max 27 °C
Weather Casper: Sunny, 26 °C Sunny
27.7 km/h WSW
Wind
30.3 km/h WSW
Gusts
1011 hPa
Pressure
0 mm
Precipitation
9 %
Humidity
6.7
UV index

Pollen (today)

Hazel None
Alder None
Birch None
Oak None
Grass None
Mugwort None
Ragweed None
06:39 / 19:24
Sunrise / Sunset
05:47 / 19:03
Moonrise / Moonset
New Moon (0 %)
Moon phase

Updated: Sep 10, 2026, 22:30 CEST Sep 10, 2026, 14:30 MDT

Today's Summary

Right now Casper has sunny weather. The thermometer currently shows 26.2°C. With wind from the west-south-west, it feels noticeably colder, around 17.8°C. UV levels are elevated today – remember sun protection if you're outdoors. During the day temperatures will range between 11.5°C and 27.3°C.

Hourly forecast – Casper, today

Sep 10, 15:00
27 °C
Sunny
Casper Sep 10, 15:00: Sunny, 27 °C
Sep 10, 16:00
26 °C
Sunny
Casper Sep 10, 16:00: Sunny, 26 °C
Sep 10, 17:00
24 °C
Overcast
Casper Sep 10, 17:00: Overcast, 24 °C
Sep 10, 18:00
21 °C
Overcast
Casper Sep 10, 18:00: Overcast, 21 °C
Sep 10, 19:00
21 °C
Overcast
Casper Sep 10, 19:00: Overcast, 21 °C
Sep 10, 20:00
20 °C
Overcast
Casper Sep 10, 20:00: Overcast, 20 °C
Sep 10, 21:00
17 °C
Clear
Casper Sep 10, 21:00: Clear, 17 °C
Sep 10, 22:00
16 °C
Clear
Casper Sep 10, 22:00: Clear, 16 °C
Sep 10, 23:00
16 °C
Clear
Casper Sep 10, 23:00: Clear, 16 °C
Sep 11, 00:00
15 °C
Clear
Casper Sep 11, 00:00: Clear, 15 °C
Sep 11, 01:00
16 °C
Clear
Casper Sep 11, 01:00: Clear, 16 °C
Sep 11, 02:00
15 °C
Clear
Casper Sep 11, 02:00: Clear, 15 °C
Sep 11, 03:00
15 °C
Overcast
Casper Sep 11, 03:00: Overcast, 15 °C
Sep 11, 04:00
15 °C
Partly cloudy
Casper Sep 11, 04:00: Partly cloudy, 15 °C
Sep 11, 05:00
15 °C
Cloudy
Casper Sep 11, 05:00: Cloudy, 15 °C
Sep 11, 06:00
18 °C
Partly cloudy
Casper Sep 11, 06:00: Partly cloudy, 18 °C
Sep 11, 07:00
21 °C
Partly cloudy
Casper Sep 11, 07:00: Partly cloudy, 21 °C
Sep 11, 08:00
22 °C
Sunny
Casper Sep 11, 08:00: Sunny, 22 °C
Sep 11, 09:00
24 °C
Sunny
Casper Sep 11, 09:00: Sunny, 24 °C
Sep 11, 10:00
25 °C
Partly cloudy
Casper Sep 11, 10:00: Partly cloudy, 25 °C
Sep 11, 11:00
26 °C
Cloudy
Casper Sep 11, 11:00: Cloudy, 26 °C
Sep 11, 12:00
26 °C
Light drizzle
Casper Sep 11, 12:00: Light drizzle, 26 °C
Sep 11, 13:00
25 °C
Patchy rain possible
Casper Sep 11, 13:00: Patchy rain possible, 25 °C
Sep 11, 14:00
17 °C
Light rain
Casper Sep 11, 14:00: Light rain, 17 °C
Time
15
16
17
18
19
20
21
22
23
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
Casper Sep 10, 15:00: Sunny
Casper Sep 10, 16:00: Sunny
Casper Sep 10, 17:00: Overcast
Casper Sep 10, 18:00: Overcast
Casper Sep 10, 19:00: Overcast
Casper Sep 10, 20:00: Overcast
Casper Sep 10, 21:00: Clear
Casper Sep 10, 22:00: Clear
Casper Sep 10, 23:00: Clear
Casper Sep 11, 00:00: Clear
Casper Sep 11, 01:00: Clear
Casper Sep 11, 02:00: Clear
Casper Sep 11, 03:00: Overcast
Casper Sep 11, 04:00: Partly cloudy
Casper Sep 11, 05:00: Cloudy
Casper Sep 11, 06:00: Partly cloudy
Casper Sep 11, 07:00: Partly cloudy
Casper Sep 11, 08:00: Sunny
Casper Sep 11, 09:00: Sunny
Casper Sep 11, 10:00: Partly cloudy
Casper Sep 11, 11:00: Cloudy
Casper Sep 11, 12:00: Light drizzle
Casper Sep 11, 13:00: Patchy rain possible
Casper Sep 11, 14:00: Light rain
Temperature (°C)
Chance of rain (%)
1
1
9
9
9
9
1
1
1
1
1
1
9
2
6
2
2
1
1
2
7
26
9
61
Precipitation
0.2 mm
0 mm
2 mm
Wind (km/h)
WSW
32
WSW
33
SW
28
SSW
22
SW
18
SW
16
SW
18
SW
17
SSW
16
SSW
16
SSW
16
SSW
16
SSW
14
SSW
13
SSW
15
WSW
19
WSW
26
WSW
38
WSW
41
W
42
WNW
35
W
40
WSW
36
WNW
35
Pressure (hPa)
1007
1007
1008
1008
1009
1010
1010
1010
1010
1010
1009
1009
1009
1010
1010
1010
1009
1009
1008
1007
1006
1004
1004
1009
Humidity (%)
8 %
9 %
11 %
12 %
13 %
14 %
14 %
15 %
17 %
18 %
20 %
21 %
22 %
22 %
25 %
24 %
23 %
19 %
22 %
21 %
20 %
21 %
24 %
55 %
Cloud cover (%)
11 %
17 %
100 %
100 %
100 %
100 %
8 %
5 %
5 %
5 %
25 %
8 %
98 %
32 %
78 %
30 %
34 %
20 %
9 %
39 %
86 %
100 %
89 %
100 %

14-day weather forecast – Casper

14-day trend for Casper: The second week looks noticeably warmer and more pleasant. Lows can drop to around 3.3°C at night, with daytime highs up to 27.8°C.

Date
Sep 10
Sep 11
Sep 12
Sep 13
Sep 14
Sep 15
Sep 16
Sep 17
Sep 18
Sep 19
Sep 20
Sep 21
Sep 22
Sep 23
Casper September 10, 2026: Sunny
Casper September 11, 2026: Sunny
Casper September 12, 2026: Patchy rain possible
Casper September 13, 2026: Sunny
Casper September 14, 2026: Sunny
Casper September 15, 2026: Sunny
Casper September 16, 2026: Sunny
Casper September 17, 2026: Sunny
Casper September 18, 2026: Overcast
Casper September 19, 2026: Overcast
Casper September 20, 2026: Patchy rain possible
Casper September 21, 2026: Sunny
Casper September 22, 2026: Sunny
Casper September 23, 2026: Sunny
Temperature (°C)
Chance of rain (%)
1
57
67
17
0
5
17
1
6
10
42
4
0
0
Precipitation
2.6 mm
3.7 mm
0.2 mm
0.1 mm
0 mm
0.7 mm
Wind max (km/h)
33
42
16
41
37
19
18
15
12
23
37
25
14
27
Date Weather Min °C Max °C Sunrise Sunset Moonrise Moonset Moon phase
September 10, 2026 Casper September 10, 2026: Sunny Sunny 12 °C 27 °C 06:39 19:24 05:47 19:03 New Moon (0 %)
September 11, 2026 Casper September 11, 2026: Sunny Sunny 11 °C 26 °C 06:40 19:23 07:06 19:26 New Moon (0 %)
September 12, 2026 Casper September 12, 2026: Patchy rain possible Patchy rain possible 6 °C 23 °C 06:41 19:21 08:24 19:49 New Moon (3 %)
September 13, 2026 Casper September 13, 2026: Sunny Sunny 11 °C 20 °C 06:42 19:19 09:41 20:13 Waxing Crescent (8 %)
September 14, 2026 Casper September 14, 2026: Sunny Sunny 3 °C 22 °C 06:44 19:17 10:56 20:41 Waxing Crescent (14 %)
September 15, 2026 Casper September 15, 2026: Sunny Sunny 5 °C 21 °C 06:45 19:15 12:10 21:15 Waxing Crescent (23 %)
September 16, 2026 Casper September 16, 2026: Sunny Sunny 10 °C 19 °C 06:46 19:14 13:20 21:55 First Quarter (32 %)
September 17, 2026 Casper September 17, 2026: Sunny Sunny 7 °C 24 °C 06:47 19:12 14:22 22:42 First Quarter (42 %)
September 18, 2026 Casper September 18, 2026: Overcast Overcast 12 °C 27 °C 06:48 19:10 15:16 23:38 First Quarter (53 %)
September 19, 2026 Casper September 19, 2026: Overcast Overcast 17 °C 28 °C 06:49 19:08 16:00 Does not set today First Quarter (63 %)
September 20, 2026 Casper September 20, 2026: Patchy rain possible Patchy rain possible 14 °C 24 °C 06:50 19:06 16:36 00:39 Waxing Moon (73 %)
September 21, 2026 Casper September 21, 2026: Sunny Sunny 10 °C 19 °C 06:51 19:05 17:04 01:42 Waxing Moon (82 %)
September 22, 2026 Casper September 22, 2026: Sunny Sunny 8 °C 24 °C 06:52 19:03 17:28 02:47 Waxing Moon (89 %)
September 23, 2026 Casper September 23, 2026: Sunny Sunny 12 °C 26 °C 06:53 19:01 17:49 03:50 Waxing Moon (95 %)