Casper weather live forecast

Today's maximum temperature in Casper is expected to be 13°C. Select a day from the live weather forecast for Casper, Wyoming, USA for more weather parameters.

Sunday
17th May
13

5

2

6
Monday
18th May
5

1

0

5
Tuesday
19th May
9

1

15

10
Wednesday
20th May
14

0

5

8
Thursday
21st May
17

4

1

8

5-day weather forecast updated at 04:00 on Sunday 17th May 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 Sunday 17th May 2026

Expect mostly cloudy with light rain in Casper, Wyoming with a maximum temperature of 13°C, maximum UV of 6 (High) and 2 hours of bright sunshine. There are 2-5 mm of rainfall expected with 69% chance of some rain and a fresh breeze of 32 kph from the north-east.

13
°C maximum temperature
5
°C minimum temperature
mostly cloudy with light rain
2
hours of sunshine
6
UV index (High)
69
% chance of some rain
<5
mm of rainfall expected
0
no heat & humidity
32
kph wind from NE

Casper weather for Monday 18th May 2026

Expect cloudy with sleet or snow in Casper, Wyoming with a maximum temperature of 5°C, maximum UV of 5 (Moderate) and no hours of bright sunshine. There are 20-30 mm of sleet/snow expected with 87% chance of some sleet or snow and a strong breeze of 40 kph from the north-east.

5
°C maximum temperature
1
°C minimum temperature
cloudy with sleet or snow
0
hours of sunshine
5
UV index (Moderate)
87
% chance of some sleet or snow
<30
mm of sleet/snow expected
-1
°C wind chill
40
kph wind from NE

Casper weather for Tuesday 19th May 2026

Expect clear skies in Casper, Wyoming with a maximum temperature of 9°C, maximum UV of 10 (Very High) and 15 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 13 kph from the south-west.

9
°C maximum temperature
1
°C minimum temperature
clear skies
15
hours of sunshine
10
UV index (Very High)
0
mm of rainfall expected
7
°C wind chill
13
kph wind from SW

Casper weather for Wednesday 20th May 2026

Expect broken clouds in Casper, Wyoming with a maximum temperature of 14°C, maximum UV of 8 (Very High) and 5 hours of bright sunshine. There are 0 mm of rainfall expected and a moderate breeze of 22 kph from the south-west.

14
°C maximum temperature
0
°C minimum temperature
broken clouds
5
hours of sunshine
8
UV index (Very High)
0
mm of rainfall expected
0
no heat & humidity
22
kph wind from SW

Casper weather for Thursday 21st May 2026

Expect overcast skies in Casper, Wyoming with a maximum temperature of 17°C, maximum UV of 8 (Very High) and 1 hour of bright sunshine. There are 0 mm of rainfall expected and a light breeze of 11 kph from the north-west.