Tomorrow Hourly Weather Forecast for Casper, WY

Hourly Weather | Tomorrow › Thursday, March 19, 2026

Active Weather Warnings

Fire Weather Watch
Red Flag Warning

Casper, Wyoming

12 AM

54°

Feels Like 50°

Humidity: 40%

UV Index: 0

Wind: 8 mph

1 AM

54°

Feels Like 48°

Humidity: 41%

UV Index: 0

Wind: 8 mph

2 AM

54°

Feels Like 48°

Humidity: 42%

UV Index: 0

Wind: 9 mph

3 AM

52°

Feels Like 46°

Humidity: 43%

UV Index: 0

Wind: 9 mph

4 AM

52°

Feels Like 46°

Humidity: 45%

UV Index: 0

Wind: 9 mph

5 AM

50°

Feels Like 45°

Humidity: 47%

UV Index: 0

Wind: 9 mph

6 AM

48°

Feels Like 45°

Humidity: 48%

UV Index: 0

Wind: 9 mph

7 AM

48°

Feels Like 41°

Humidity: 48%

UV Index: 0

Wind: 10 mph

8 AM

50°

Feels Like 45°

Humidity: 44%

UV Index: 1

Wind: 12 mph

9 AM

55°

Feels Like 52°

Humidity: 37%

UV Index: 2

Wind: 14 mph

10 AM

61°

Feels Like 59°

Humidity: 29%

UV Index: 3

Wind: 15 mph

11 AM

68°

Feels Like 66°

Humidity: 23%

UV Index: 4

Wind: 17 mph

12 PM

72°

Feels Like 72°

Humidity: 21%

UV Index: 5

Wind: 21 mph

1 PM

73°

Feels Like 73°

Humidity: 18%

UV Index: 5

Wind: 22 mph

2 PM

77°

Feels Like 75°

Humidity: 15%

UV Index: 5

Wind: 23 mph

3 PM

81°

Feels Like 79°

Humidity: 13%

UV Index: 4

Wind: 23 mph

4 PM

82°

Feels Like 79°

Humidity: 12%

UV Index: 3

Wind: 22 mph

5 PM

81°

Feels Like 79°

Humidity: 12%

UV Index: 2

Wind: 20 mph

6 PM

79°

Feels Like 75°

Humidity: 12%

UV Index: 1

Wind: 18 mph

7 PM

73°

Feels Like 70°

Humidity: 15%

UV Index: 0

Wind: 16 mph

8 PM

70°

Feels Like 66°

Humidity: 19%

UV Index: 0

Wind: 14 mph

9 PM

66°

Feels Like 63°

Humidity: 24%

UV Index: 0

Wind: 12 mph

10 PM

63°

Feels Like 61°

Humidity: 27%

UV Index: 0

Wind: 10 mph

11 PM

61°

Feels Like 57°

Humidity: 30%

UV Index: 0

Wind: 9 mph

Weather Alerts and Warnings for Casper

Severe Future Possible

Fire Weather Watch

Fire Weather Watch issued March 17 at 2:23AM MDT until March 21 at 9:00PM MDT by NWS Riverton WY

Mar 18, 12:00 PM → Mar 21, 9:00 PM

The National Weather Service in Riverton has issued a Fire Weather
Watch, which is in effect from Wednesday afternoon through
Saturday evening.

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.

* AFFECTED AREA:
In Central WY Fire Zones...280...289.
In North Central WY Fire Zone....281.

* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Johnson.
In Southwest WY...Sweetwater.

* WIND: West 15 to 25 mph with gusts up to 40 mph. The strongest
wind is expected on Wednesday and Saturday.

* HUMIDITY: 10 to 15 percent.

* TEMPERATURES: Highs in the 70s Wednesday. Lows in 70s to around
80 Thursday through Saturday.

+ Read More

A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings.

Updated: Mar 17, 12:42 PM Source: NWS Alert

Severe Expected Likely

Red Flag Warning

Red Flag Warning issued March 18 at 1:55AM MDT until March 21 at 9:00PM MDT by NWS Riverton WY

Mar 18, 12:00 PM → Mar 21, 9:00 PM

* IMPACTS: Low Humidities...Unseasonably Warm Temperatures...and
Strong Gusty Winds could cause erratic fire behavior.

* AFFECTED AREA:
In Central WY Fire Zones...280...289.
In North Central WY Fire Zone....281.

* COUNTIES AFFECTED:
In Central WY...Fremont...Natrona.
In North Central WY...Johnson.
In Southwest WY...Sweetwater.

* WIND: West 20 to 30 mph with gusts up to 45 mph today and
Saturday; 15 to 25 mph with gusts to 35 mph Thursday and Friday.

* HUMIDITY: 10 to 15 percent.

* TEMPERATURES: Highs 70 to 75 today, 75 to 80 Thursday through
Saturday.

+ Read More

A Red Flag Warning means that critical fire weather conditions are either occurring now....or will shortly. A combination of strong winds...low relative humidity...and warm temperatures can contribute to extreme fire behavior.

Updated: Mar 18, 6:30 AM Source: NWS Alert

Weather Alerts and Warnings for Casper

Fire Weather Watch

Red Flag Warning

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