Weather Tomorrow in Boise, ID
Heat AdvisoryUntil Aug 21, 9:15 PM
Heat Advisory issued August 20 at 2:16PM MDT until August 21 at 9:00PM MDT by NWS Boise ID
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Saturday, August 22, 2026
Precip chance
23%
Wind
6-12 mph
Humidity
36%
Feels like
93–76°F
Rain forecast
Low chance of precipitation. Highest risk around 12 AM (23%).
Data source: National Weather Service (NOAA) · Updated just now
Tomorrow by Hour
| Time | Temp | Condition | Rain % | Wind | ||
|---|---|---|---|---|---|---|
| 6 AM☽ | 84°F | Cloudy | 6% | 9 mph ESE | ||
| 7 AM☽ | 84°F | Mostly Cloudy | 6% | 6 mph ESE | ||
| 8 AM☽ | 81°F | Mostly Cloudy | 6% | 8 mph E | ||
| 9 AM☽ | 80°F | Partly Cloudy | 6% | 8 mph ESE | ||
| 10 AM☽ | 78°F | Mostly Cloudy | 6% | 9 mph E | ||
| 11 AM☽ | 76°F | Partly Cloudy | 6% | 8 mph ESE | ||
| 12 PM | 75°F | Partly Sunny | 6% | 10 mph ESE | ||
| 1 PM | 74°F | Partly Sunny | 6% | 10 mph ESE | ||
| 2 PM | 74°F | Partly Sunny | 6% | 10 mph ESE | ||
| 3 PM | 77°F | Mostly Sunny | 6% | 10 mph SSE | ||
| 4 PM | 83°F | Mostly Sunny | 6% | 10 mph SSE | ||
| 5 PM | 86°F | Mostly Sunny | 6% | 10 mph SSE | ||
| 6 PM | 88°F | Slight Chance Showers And Thunderstorms | 16% | 12 mph SSW | ||
| 7 PM | 90°F | Slight Chance Showers And Thunderstorms | 16% | 12 mph SSW | ||
| 8 PM | 91°F | Slight Chance Showers And Thunderstorms | 16% | 12 mph SSW | ||
| 9 PM | 93°F | Slight Chance Showers And Thunderstorms | 16% | 8 mph W | ||
| 10 PM | 95°F | Slight Chance Showers And Thunderstorms | 16% | 8 mph W | ||
| 11 PM | 95°F | Slight Chance Showers And Thunderstorms | 16% | 8 mph W | ||
| 12 AM☽ | 95°F | Slight Chance Showers And Thunderstorms | 23% | 12 mph S | ||
| 1 AM☽ | 93°F | Slight Chance Showers And Thunderstorms | 23% | 12 mph S | ||
| 2 AM☽ | 90°F | Slight Chance Showers And Thunderstorms | 23% | 12 mph S | ||
| 3 AM☽ | 86°F | Slight Chance Showers And Thunderstorms | 23% | 12 mph SE | ||
| 4 AM☽ | 82°F | Slight Chance Showers And Thunderstorms | 23% | 12 mph SE | ||
| 5 AM☽ | 79°F | Slight Chance Showers And Thunderstorms | 23% | 12 mph SE | ||
Precipitation Timeline
What to Wear Tomorrow
Extreme heat — stay cool and protected
Clothing
- • Lightest possible clothing
- • Wide-brim hat
- • UV-protective shirt if outdoors
Footwear
Breathable sandals
Accessories
- • Sunglasses
- • Sunscreen
Conditions
High: 95°F
Low: 74°F
Wind: 6-12 mph
Rain: 23%
Enjoy your day!
Best Time to Be Outside Tomorrow
Excellent conditions for outdoor activities (dry, comfortable temp, light wind, daylight)
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