Local weather forecast

Weather in Riverton, WY

Updated 2026-08-11 11:00 local time · ZIP codes 82501

Sunny
Now84°F

Sunny

High / Low96° / 70°
Rain chance2%
Wind8 mph
Weather alerts

Active alerts

5
Red Flag Warning issued August 10 at 8:54PM MDT until August 11 at 9:00PM MDT by NWS Riverton WY

* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 286. * COUNTIES AFFECTED: In Central WY...Fremont. In North Central WY...Hot Springs...Park. * WIND: West 10 to 20 mph with gusts up to 35 mph. * HUMIDITY: As low as 12 percent. * TEMPERATURES: Lows in the lower 50s. Highs in the upper 70s.

Safety instructions

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.

Red Flag Warning issued August 10 at 8:54PM MDT until August 11 at 9:00PM MDT by NWS Riverton WY

* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...285...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Washakie. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 9 percent. * TEMPERATURES: Lows around 60. Highs in the lower 90s.

Safety instructions

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.

Red Flag Warning issued August 10 at 8:54PM MDT until August 11 at 9:00PM MDT by NWS Riverton WY

* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...283...289. In North Central WY Fire Zone....287. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs. In Southwest WY...Sweetwater. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 10 percent. * TEMPERATURES: Lows around 60. Highs around 90.

Safety instructions

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.

Red Flag Warning issued August 10 at 8:54PM MDT until August 10 at 9:00PM MDT by NWS Riverton WY

* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Southwest WY Fire Zone....279. In West Central WY Fire Zone....278. * COUNTIES AFFECTED: In Southwest WY...Sweetwater. In West Central WY...Lincoln...Sublette. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 14 percent. * TEMPERATURES: Lows in the mid 50s. Highs in the mid 80s.

Safety instructions

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.

Red Flag Warning issued August 10 at 8:54PM MDT until August 10 at 9:00PM MDT by NWS Riverton WY

* IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds could cause erratic fire behavior. * AFFECTED AREA: In Central WY Fire Zones...280...285...300. In North Central WY Fire Zone....281. * COUNTIES AFFECTED: In Central WY...Fremont...Natrona. In North Central WY...Hot Springs...Johnson...Washakie. * WIND: West 10 to 20 mph with gusts up to 30 mph. * HUMIDITY: As low as 9 percent. * TEMPERATURES: Lows around 60. Highs in the lower 90s.

Safety instructions

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.

Hourly

Next hours

NowSunny84°8% rain
12 PMOvercast92°9% rain
1 PMSunny94°0% rain
2 PMSunny95°1% rain
3 PMSunny96°1% rain
4 PMSunny96°1% rain
5 PMSunny96°1% rain
6 PMSunny95°1% rain
7 PMSunny92°1% rain
8 PMSunny88°1% rain
9 PMClear85°1% rain
10 PMClear82°1% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
96° 70°Sunny
Rain 2%Gust 15 mph
Tomorrow2026-08-12
Partly Cloudy
89° 70°Partly Cloudy
Rain 36%Gust 24 mph
Thursday2026-08-13
Partly Cloudy
82° 65°Partly Cloudy
Rain 17%Gust 13 mph
Conditions

Weather details

Feels like80°F
Humidity14%
Pressure30.14 inHg
Visibility10 mi
Wind8 mph NW
Wind gusts10 mph
Precipitation0.00 in
UV index6
Daylight

Sunrise, sunset and moon

Sunrise06:15 AM
Sunset08:22 PM
Moonrise04:16 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Umbrella not essential

Rain chance stays relatively low over the next 12 hours (up to 9%).

Light layers should work

It feels like 80°F with winds near 8 mph.

Best window: 8 PM

88°F, 1% rain chance and 6 mph wind.

Driving conditions look generally normal

Visibility is around 10 mi; gusts may reach 17 mph.

Run with a few weather adjustments

Current temperature is 84°F, wind 8 mph, rain chance up to 9%.

Moderate UV protection recommended

UV index is 6. Sunscreen and sunglasses are sensible for longer outdoor time.

Riverton weather today

Sunny and 84°F in Riverton, WY. Today's high is 96°F with a 2% rain chance. Winds are around 8 mph with gusts near 10 mph. Relative humidity is 14%, pressure is 30.14 inHg, and visibility is about 10 miles.

Tonight and tomorrow in Riverton

Sunrise is at 06:15 AM and sunset is at 08:22 PM. Tomorrow's forecast calls for Partly Cloudy with a high near 89°F and a low near 70°F. The maximum rain chance is 36%.

Nearby

Weather near Riverton

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