Casper weather live forecast

Today's maximum temperature in Casper is expected to be 19°C. Select a day from the live weather forecast for Casper, Wyoming, USA for more weather parameters.

Thursday
17th Sep
19

13

1

2
Friday
18th Sep
25

14

9

6
Saturday
19th Sep
21

12

5

6
Sunday
20th Sep
17

10

6

5
Monday
21st Sep
21

9

12

7

5-day weather forecast updated at 04:00 on Thursday 17th September 2026 GMT

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The 5-day weather forecast for Wyoming (Casper) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Casper weather forecast by day

Below are the detailed weather forecasts for Casper for the next 5 days.

Casper weather for Thursday 17th September 2026

Expect isolated thunderstorms in Casper, Wyoming with a maximum temperature of 19°C, maximum UV of 2 (Low) and 1 hour of bright sunshine. There are 2-5 mm of rainfall expected with 60% chance of some rain and a light breeze of 10 kph from the east.

19
°C maximum temperature
13
°C minimum temperature
isolated thunderstorms
1
hour of sunshine
2
UV index (Low)
60
% chance of some rain
<5
mm of rainfall expected
19
°C wind chill
10
kph wind from E

Casper weather for Friday 18th September 2026

Expect isolated thunderstorms in Casper, Wyoming with a maximum temperature of 25°C, maximum UV of 6 (High) and 9 hours of bright sunshine. There are 0-2 mm of rainfall expected with 43% chance of some rain and a moderate breeze of 22 kph from the south-west.

25
°C maximum temperature
14
°C minimum temperature
isolated thunderstorms
9
hours of sunshine
6
UV index (High)
43
% chance of some rain
<2
mm of rainfall expected
25
°C wind chill
22
kph wind from SW

Casper weather for Saturday 19th September 2026

Expect isolated thunderstorms in Casper, Wyoming with a maximum temperature of 21°C, maximum UV of 6 (High) and 5 hours of bright sunshine. There are 0-2 mm of rainfall expected with 75% chance of some rain and a gentle breeze of 16 kph from the west.

21
°C maximum temperature
12
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
6
UV index (High)
75
% chance of some rain
<2
mm of rainfall expected
0
no heat & humidity
16
kph wind from W

Casper weather for Sunday 20th September 2026

Expect sunshine and showers in Casper, Wyoming with a maximum temperature of 17°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 2-5 mm of rainfall expected with 58% chance of some rain and a gentle breeze of 17 kph from the north-west.

17
°C maximum temperature
10
°C minimum temperature
sunshine and showers
6
hours of sunshine
5
UV index (Moderate)
58
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
17
kph wind from NW

Casper weather for Monday 21st September 2026

Expect clear skies in Casper, Wyoming with a maximum temperature of 21°C, maximum UV of 7 (High) and 12 hours of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 8 kph from the west.