Monthly weather forecast and climate
Boise, ID

The golden fall season in Boise, Idaho, with the tall city buildings in view
The golden fall season in Boise, Idaho, with the tall city buildings in view

How many days does it rain in Boise?

Throughout the year, in Boise, Idaho, there are 87.6 rainfall days, and 11.7" (297.9mm) of precipitation is accumulated.

When does it snow in Boise?

January through April, October through December are months with snowfall.

How many days does it snow in Boise?

Throughout the year, there are 19.4 snowfall days, and 19.2" (487.5mm) of snow is accumulated.

What is the warmest month in Boise?

The warmest month in Boise, Idaho, is July, with an average high-temperature of 91.2°F (32.9°C) and an average low-temperature of 60.4°F (15.8°C).

What is the driest month in Boise?

August is the month with the least rainfall in Boise. Rain falls for 2.4 days and accumulates 0.2" (6.1mm) of precipitation.

What is the coldest month in Boise?

December is the coldest month, with an average high-temperature of 37.6°F (3.1°C) and an average low-temperature of 24.1°F (-4.4°C).

What is the rainiest month in Boise?

The month with the most rainfall in Boise is December when the rain falls for 11.8 days and typically aggregates up to 1.6" (39.4mm) of precipitation.

What is the snowiest month in Boise?

The month with the most snowfall is December when snow falls for 6 days and typically aggregates up to 7" (177.8mm) of snow.
Average humidity - Boise, ID
Average rainfall - Boise, ID

The wettest month (with the highest rainfall) is December (39.4mm).
The driest month (with the lowest rainfall) is August (6.1mm).

Average rainfall days - Boise, ID

The month with the highest number of rainy days is December (11.8 days).
The month with the lowest number of rainy days is August (2.4 days).

Average snowfall - Boise, ID

The month with the highest snowfall is December (177.8mm).
Months with the lowest snowfall are May, June, July, August and September (0mm).

Average snowfall days - Boise, ID

The month with the highest number of snowfall days is December (6 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Boise, ID
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