Local weather forecast

Weather in Terreton, ID

Updated 2026-08-11 11:45 local time · ZIP codes 83450

Sunny
Now77°F

Sunny

High / Low94° / 55°
Rain chance0%
Wind2 mph
Weather alerts

Active alerts

1
Red Flag Warning issued August 11 at 2:17AM MDT until August 11 at 9:00PM MDT by NWS Riverton WY

The National Weather Service in Riverton has issued a Red Flag Warning, which is in effect from noon today to 9 PM MDT this evening. * IMPACTS: Low Humidities...Hot Temperatures...and Strong Gusty Winds...could cause erratic fire behavior. * AFFECTED AREA: In Northwest WY...Fire Weather Zone 140. * COUNTIES AFFECTED: In Northwest WY...Yellowstone National Park. * WIND: West 10 to 15 mph with gusts up to 30 mph. * HUMIDITY: As low as 14 percent. * TEMPERATURES: 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.

Hourly

Next hours

NowSunny77°0% rain
1 PMSunny88°0% rain
2 PMSunny92°0% rain
3 PMSunny93°0% rain
4 PMSunny94°0% rain
5 PMSunny93°0% rain
6 PMSunny91°0% rain
7 PMSunny88°0% rain
8 PMSunny84°0% rain
9 PMClear79°0% rain
10 PMClear76°0% rain
11 PMPartly Cloudy79°3% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
94° 55°Sunny
Rain 0%Gust 21 mph
Tomorrow2026-08-12
Partly Cloudy
94° 69°Partly Cloudy
Rain 2%Gust 26 mph
Thursday2026-08-13
Partly Cloudy
82° 55°Partly Cloudy
Rain 57%Gust 19 mph
Conditions

Weather details

Feels like76°F
Humidity28%
Pressure30.15 inHg
Visibility8 mi
Wind2 mph ENE
Wind gusts2 mph
Precipitation0.00 in
UV index5
Daylight

Sunrise, sunset and moon

Sunrise06:29 AM
Sunset08:40 PM
Moonrise04:30 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 3%).

Light layers should work

It feels like 76°F with winds near 2 mph.

Best window: 12 PM

84°F, 0% rain chance and 1 mph wind.

Allow a little extra driving time

Visibility is around 8 mi; gusts may reach 33 mph.

Good conditions for an easy run

Current temperature is 77°F, wind 2 mph, rain chance up to 3%.

Moderate UV protection recommended

UV index is 5. Sunscreen and sunglasses are sensible for longer outdoor time.

Terreton weather today

Sunny and 77°F in Terreton, ID. Today's high is 94°F with a 0% rain chance. Winds are around 2 mph with gusts near 2 mph. Relative humidity is 28%, pressure is 30.15 inHg, and visibility is about 8 miles.

Tonight and tomorrow in Terreton

Sunrise is at 06:29 AM and sunset is at 08:40 PM. Tomorrow's forecast calls for Partly Cloudy with a high near 94°F and a low near 69°F. The maximum rain chance is 2%.

Nearby

Weather near Terreton

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