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Boise, ID Weather Tomorrow

Get a closer look at tomorrow's weather in Boise and the upcoming 5 day forecast with precipitation chances, day and night conditions, high and low temperatures in Fahrenheit and Celsius, sunrise, sunset, sky conditions, wind chill, and wind speed with direction across the Boise area and around Ada county, Idaho.
Updated: Sun Sep 13th 2026 1:15 PM MDT
Boise, ID Weather – 9-13 – Sunny
73° / 55°
Sunny
Boise is set for sunshine with temperatures peaking at 73°F and dipping to 55°F. There's a very small chance of rainfall, only about 1%. Winds will be strong at speeds peaking at 23mph and gusts of 25.3mph at 11 PM. Humidity levels should be comfortable, sitting around 33% on average, the maximum being 38% at 11 PM and 21% being its lowest at 4 PM. Barometric pressure is its highest of 29.97inHg at 11 PM, a lowest point of 29.87inHg at 5 PM with an avg 29.91inHg.
Boise, ID Weather – 9-14 – Sunny
69° / 48°

Weather Tomorrow

Sunny
Boise could see sunshine with daytime highs of 69°F and nighttime lows near 48°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 14mph on average and gusts of 26.7mph at 12 AM. Humidity levels should be comfortable, sitting around 43% on average, the maximum being 65% at 7 AM and 25% being its lowest at 6 PM. Barometric pressure is its highest of 30.1inHg at 8 AM, a lowest point of 29.93inHg at 6 PM with an avg 30.02inHg.
Boise, ID Weather – 9-15 – Sunny
77° / 53°
Sunny
In Boise, it will be sunny with highs near 77°F and lows around 53°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 12mph on average and gusts of 19.7mph at 11 AM. Humidity levels should be comfortable, sitting around 32% on average, the maximum being 48% at 7 AM and 14% being its lowest at 6 PM. Barometric pressure is its highest of 29.99inHg at 8 AM, a lowest point of 29.81inHg at 6 PM with an avg 29.91inHg.
Boise, ID Weather – 9-16 – Sunny
83° / 53°
Sunny
It will be sunny in Boise, with a high of 83°F and a low of 53°F. There's a very small chance of rainfall, only about 3%. Winds will be light at 9mph and gusts of 17mph at 6 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 43% at 7 AM and 11% being its lowest at 6 PM. Barometric pressure is its highest of 30inHg at 11 AM, a lowest point of 29.82inHg at 6 PM with an avg 29.91inHg.
Boise, ID Weather – 9-17 – Sunny
87° / 61°
Sunny
A sunny day is in the forecast for Boise, with a high of 87°F and a low of 61°F. There's a very small chance of rainfall, only about 2%. Wind will be moderate, blowing around 14mph on average and gusts of 18.6mph at 2 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 32% at 8 AM and 11% being its lowest at 6 PM. Barometric pressure is its highest of 29.91inHg at 11 PM, a lowest point of 29.81inHg at 6 PM with an avg 29.87inHg.
Boise, ID Weather – 9-18 – Sunny
80° / 61°
Sunny
It will be sunny in Boise, with a high of 80°F and a low of 61°F. There's a very small chance of rainfall, only about 1%. Wind will be moderate, blowing around 13mph on average and gusts of 22.4mph at 9 PM. The air will be relatively dry with average humidity levels below 30%, the maximum being 45% at 11 PM and 20% being its lowest at 3 AM. Barometric pressure is its highest of 30.03inHg at 12 PM, a lowest point of 29.92inHg at 12 AM with an avg 29.98inHg.

Currently

Sunny 66°F
29.93 inHg.
Barometer
25%
Humidity
WNW 24.8 mph
Wind
Sunny

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