2025 Compare Climate & Weather:
Boise City, ID vs Boulder, CO

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Highlights

On average, there are 245 sunny days per year in Boulder. Boise City averages 206 sunny days per year. The US average is 205 sunny days.

Boulder, Colorado gets 18.1 inches of rain, on average, per year. Boise City, Idaho gets 13 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Boulder averages 71.1 inches of snow per year. Boise City averages 17.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Boulder, Colorado
Summer High: the July high is around 88.1 degrees
Winter Low: the January low is 18.9
Rain: averages 18.1 inches of rain a year
Snow: averages 71.1 inches of snow a year

Boise City, Idaho
Summer High: the July high is around 91.6 degrees
Winter Low: the January low is 23.7
Rain: averages 13 inches of rain a year
Snow: averages 17.5 inches of snow a year

BestPlaces Comfort Index
Boulder

The annual BestPlaces Comfort Index for Boulder is 7.1 (10=best), which means it is about average compared to other places in Colorado.

7.1 / 10
September, June and August are the most pleasant months in Boulder, while December and January are the least comfortable months.

Boise City

The annual BestPlaces Comfort Index for Boise is 7.3 (10=best), which means it is one of the most pleasant places in Idaho.

7.3 / 10
September, June and May are the most pleasant months in Boise, while December and January are the least comfortable months.

Today's Weather - Boise City, ID

7 PM PST

Mostly Clear

76°F

DAYDESCRIPTIONHIGH / LOWWIND
TonightMostly Clear54° / 88°E 2 to 6 mph
Friday NightMostly Cloudy59° / 90°SE 5 to 8 mph
Saturday NightMostly Cloudy58° / 84°S 6 mph
Sunday NightChance Showers And Thunderstorms51° / 67°W 6 to 12 mph
Monday NightChance Rain Showers45° / 64°NW 6 to 10 mph
Tuesday NightSlight Chance Rain Showers44° / 67°NW 7 to 12 mph
Wednesday NightPartly Cloudy43° / 70°NW 5 to 10 mph
Today's Weather - Boulder, CO

7 PM PST

Partly Cloudy

65°F

DAYDESCRIPTIONHIGH / LOWWIND
TonightPartly Cloudy47° / 73°WSW 5 mph
Friday NightPartly Cloudy47° / 78°NW 2 to 6 mph
Saturday NightMostly Clear51° / 83°SW 6 mph
Sunday NightMostly Cloudy54° / 84°WSW 6 mph
Monday NightPartly Cloudy54° / 83°SW 8 mph
Tuesday NightSlight Chance Showers And Thunderstorms48° / 71°W 6 to 12 mph
Wednesday NightSlight Chance Rain Showers then Partly Cloudy45° / 71°W 5 to 15 mph
Average Monthly High / Low (°F)
MonthBoise City, IDBoulder, CO
January38° / 24°47° / 19°
February46° / 27°48° / 20°
March56° / 33°55° / 27°
April64° / 38°62° / 34°
May73° / 45°72° / 43°
June82° / 52°82° / 51°
July92° / 58°88° / 57°
August90° / 56°86° / 55°
September80° / 48°78° / 46°
October66° / 39°66° / 36°
November49° / 31°54° / 26°
December38° / 23°45° / 18°
Hot, Freezing, Rainy, Snowy Days: Boise City / Boulder
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 024 / 2810 / 54 / 5
February0 / 020 / 259 / 52 / 5
March0 / 013 / 2310 / 71 / 6
April0 / 07 / 139 / 90 / 4
May2 / 12 / 28 / 110 / 1
June7 / 60 / 05 / 90 / 0
July20 / 140 / 03 / 90 / 0
August17 / 90 / 02 / 100 / 0
September5 / 31 / 14 / 70 / 0
October0 / 06 / 106 / 60 / 2
November0 / 016 / 2211 / 52 / 4
December0 / 026 / 2811 / 54 / 5
July is the hottest month for Boise with an average high temperature of 91.6°, which ranks it as one of the hottest places in Idaho. In Boise, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boise are September, June and May.

July is the hottest month for Boulder with an average high temperature of 88.1°, which ranks it as about average compared to other places in Colorado. In Boulder, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Boulder are September, June and May.
December has the coldest nighttime temperatures for Boise with an average of 22.7°. This is warmer than most places in Idaho.

December has the coldest nighttime temperatures for Boulder with an average of 18.3°. This is one of the warmest places in Colorado.

In Boise, there are 51.0 days annually when the high temperature is over 90°, which is one of the hottest places in Idaho.

In Boulder, there are 32.4 days annually when the high temperature is over 90°, which is about average compared to other places in Colorado.

In Boise, there are 114.9 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Idaho.

In Boulder, there are 151.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Colorado.

In Boise, there are 2.8 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Idaho.

In Boulder, there are 5.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Colorado.

December is the wettest month in Boise with 1.9 inches of rain, and the driest month is July with 0.3 inches. The wettest season is Spring with 35% of yearly precipitation and 10% occurs in Autumn, which is the driest season. The annual rainfall of 13.0 inches in Boise means that it is about average compared to other places in Idaho.


May is the wettest month in Boulder with 2.5 inches of rain, and the driest month is January with 0.6 inches. The wettest season is Summer with 37% of yearly precipitation and 11% occurs in Spring, which is the driest season. The annual rainfall of 18.1 inches in Boulder means that it is wetter than most places in Colorado.

December is the rainiest month in Boise with 11.3 days of rain, and August is the driest month with only 2.3 rainy days. There are 87.0 rainy days annually in Boise, which is less rainy than most places in Idaho. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 12% chance of a rainy day.

May is the rainiest month in Boulder with 10.5 days of rain, and January is the driest month with only 4.7 rainy days. There are 88.0 rainy days annually in Boulder, which is rainier than most places in Colorado. The rainiest season is Autumn when it rains 31% of the time and the driest is Spring with only a 17% chance of a rainy day.

An annual snowfall of 17.5 inches in Boise means that it is less snowy than most places in Idaho.

An annual snowfall of 71.1 inches in Boulder means that it is snowier than most places in Colorado.
December is the snowiest month in Boise with 6.4 inches of snow, and 5 months of the year have significant snowfall.

March is the snowiest month in Boulder with 14.3 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Boise City    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Boise City

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Reviews for Boulder    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Boulder

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Zips In Boise City, Idaho
83709, 83704, 83706, 83713, 83705, 83702, 83716, 83703, 83712
Zips In BOULDER, COLORADO
80302, 80304, 80301, 80303, 80305, 80310
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