Local weather forecast

Weather in Island Park, ID

Updated 2026-08-11 09:15 local time · ZIP codes 83429

Now67°F

Sunny

High / Low87° / 48°

Rain chance1%

Wind3 mph

Weather alerts

Active alerts

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

Now

67°1% rain

10 AM

73°2% rain

11 AM

78°4% rain

12 PM

82°9% rain

1 PM

85°2% rain

2 PM

86°0% rain

3 PM

87°1% rain

4 PM

87°1% rain

5 PM

87°1% rain

6 PM

86°1% rain

7 PM

84°2% rain

8 PM

73°3% rain

Forecast

3-day weather forecast

Today2026-08-11

87° 48°Sunny

Rain 1%Gust 13 mph

Tomorrow2026-08-12

85° 55°Partly Cloudy

Rain 4%Gust 12 mph

Thursday2026-08-13

76° 47°Sunny

Rain 69%Gust 17 mph

Conditions

Weather details

Feels like62°F

Humidity23%

Pressure30.02 inHg

Visibility6 mi

Wind3 mph ESE

Wind gusts3 mph

Precipitation0.00 in

UV index2

Daylight

Sunrise, sunset and moon

Sunrise06:24 AM

Sunset08:37 PM

Moonrise04:23 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 62°F with winds near 3 mph.

Best window: 9 AM

67°F, 1% rain chance and 3 mph wind.

Driving conditions look generally normal

Visibility is around 6 mi; gusts may reach 14 mph.

Good conditions for an easy run

Current temperature is 67°F, wind 3 mph, rain chance up to 9%.

Low UV protection needs

UV index is 2.

Island Park weather today

Sunny and 67°F in Island Park, ID. Today's high is 87°F with a 1% rain chance. Winds are around 3 mph with gusts near 3 mph. Relative humidity is 23%, pressure is 30.02 inHg, and visibility is about 6 miles.

Tonight and tomorrow in Island Park

Sunrise is at 06:24 AM and sunset is at 08:37 PM. Tomorrow's forecast calls for Partly Cloudy with a high near 85°F and a low near 55°F. The maximum rain chance is 4%.

Nearby

Weather near Island Park

Macks Inn, ID~4 mi away Ashton, ID~27 mi away Chester, ID~33 mi away Saint Anthony, ID~38 mi away Spencer, ID~39 mi away Felt, ID~40 mi away Newdale, ID~42 mi away Teton, ID~43 mi away

Idaho

Popular cities in Idaho

View state page →

Boise Nampa Idaho Falls Meridian Pocatello Caldwell Coeur D Alene Twin Falls Post Falls Rexburg Lewiston Moscow Blackfoot Kuna Eagle Mountain Home

Explore more weather

West and U.S. city weather

Browse West →

New York, NY Los Angeles, CA Chicago, IL Houston, TX Phoenix, AZ Philadelphia, PA San Antonio, TX San Diego, CA Dallas, TX Jacksonville, FL Austin, TX Fort Worth, TX