Local weather forecast

Weather in Iona, ID

Updated 2026-08-11 11:00 local time · ZIP codes 83427

Sunny
Now72°F

Sunny

High / Low95° / 58°
Rain chance0%
Wind6 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

NowSunny72°0% rain
12 PMSunny91°0% rain
1 PMSunny94°0% rain
2 PMSunny94°0% rain
3 PMSunny95°0% rain
4 PMSunny95°0% rain
5 PMSunny95°0% rain
6 PMSunny92°0% rain
7 PMSunny90°0% rain
8 PMSunny85°0% rain
9 PMClear80°0% rain
10 PMClear77°0% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
95° 58°Sunny
Rain 0%Gust 15 mph
Tomorrow2026-08-12
Partly Cloudy
94° 67°Partly Cloudy
Rain 2%Gust 26 mph
Thursday2026-08-13
Partly Cloudy
82° 57°Partly Cloudy
Rain 57%Gust 20 mph
Conditions

Weather details

Feels like73°F
Humidity31%
Pressure30.15 inHg
Visibility7 mi
Wind6 mph WSW
Wind gusts7 mph
Precipitation0.00 in
UV index5
Daylight

Sunrise, sunset and moon

Sunrise06:28 AM
Sunset08:37 PM
Moonrise04:29 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 0%).

Light layers should work

It feels like 73°F with winds near 6 mph.

Best window: 11 AM

72°F, 0% rain chance and 6 mph wind.

Driving conditions look generally normal

Visibility is around 7 mi; gusts may reach 23 mph.

Good conditions for an easy run

Current temperature is 72°F, wind 6 mph, rain chance up to 0%.

Moderate UV protection recommended

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

Iona weather today

Sunny and 72°F in Iona, ID. Today's high is 95°F with a 0% rain chance. Winds are around 6 mph with gusts near 7 mph. Relative humidity is 31%, pressure is 30.15 inHg, and visibility is about 7 miles.

Tonight and tomorrow in Iona

Sunrise is at 06:28 AM and sunset is at 08:37 PM. Tomorrow's forecast calls for Partly Cloudy with a high near 94°F and a low near 67°F. The maximum rain chance is 2%.

Nearby

Weather near Iona

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