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

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Highlights

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

Boise City, Idaho gets 13 inches of rain, on average, per year. Grand Junction, Colorado gets 9.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Boise City averages 17.5 inches of snow per year. Grand Junction averages 15.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Grand Junction, Colorado
Summer High: the July high is around 92.8 degrees
Winter Low: the January low is 17.8
Rain: averages 9.9 inches of rain a year
Snow: averages 15.8 inches of snow a year

BestPlaces Comfort Index
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.

Grand Junction

The annual BestPlaces Comfort Index for Grand Junction is 7.4 (10=best), which means it is one of the most pleasant places in Colorado.

7.4 / 10
September, May and June are the most pleasant months in Grand Junction, while January and December are the least comfortable months.

Today's Weather - Grand Junction, CO

2 PM PST

Mostly Sunny

88°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonMostly Sunny90° / 58°SSW 15 to 20 mph
TuesdaySunny85° / 46°S 15 to 25 mph
WednesdayMostly Sunny then Chance Showers And Thunderstorms68° / 41°SW 5 to 15 mph
ThursdaySunny72° / 45°SW 0 to 10 mph
FridayMostly Sunny77° / 49°WSW 5 to 10 mph
SaturdayPartly Sunny80° / 52°S 5 to 10 mph
SundayChance Showers And Thunderstorms77° / 48°S 10 to 15 mph
Today's Weather - Boise City, ID

2 PM PST

Slight Chance Rain Showers

65°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonSlight Chance Rain Showers68° / 44°W 13 mph
TuesdayRain Showers Likely64° / 44°NW 3 to 13 mph
WednesdayMostly Sunny68° / 42°NW 6 to 13 mph
ThursdaySunny69° / 48°NW 3 to 9 mph
FridayPartly Sunny68° / 47°WNW 3 to 7 mph
SaturdayShowers And Thunderstorms Likely71° / 46°SSE 3 to 8 mph
SundaySlight Chance Rain Showers66° / 45°NW 8 to 14 mph
Average Monthly High / Low (°F)
MonthGrand Junction, COBoise City, ID
January39° / 18°38° / 24°
February46° / 24°46° / 27°
March57° / 32°56° / 33°
April66° / 39°64° / 38°
May76° / 48°73° / 45°
June87° / 57°82° / 52°
July93° / 63°92° / 58°
August90° / 61°90° / 56°
September80° / 52°80° / 48°
October67° / 40°66° / 39°
November51° / 29°49° / 31°
December40° / 20°38° / 23°
Hot, Freezing, Rainy, Snowy Days: Grand Junction / Boise City
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 030 / 245 / 103 / 4
February0 / 024 / 205 / 92 / 2
March0 / 015 / 137 / 102 / 1
April0 / 06 / 77 / 91 / 0
May1 / 20 / 26 / 80 / 0
June12 / 70 / 04 / 50 / 0
July22 / 200 / 05 / 30 / 0
August16 / 170 / 07 / 20 / 0
September3 / 50 / 17 / 40 / 0
October0 / 04 / 66 / 60 / 0
November0 / 021 / 166 / 112 / 2
December0 / 030 / 265 / 113 / 4
July is the hottest month for Grand Junction with an average high temperature of 92.8°, which ranks it as one of the hottest places in Colorado. In Grand Junction, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Grand Junction are May, September and June.

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.
January has the coldest nighttime temperatures for Grand Junction with an average of 17.8°. This is warmer than most places in Colorado.

December has the coldest nighttime temperatures for Boise with an average of 22.7°. This is warmer than most places in Idaho.

In Grand Junction, there are 54.9 days annually when the high temperature is over 90°, which is one of the hottest 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 Grand Junction, there are 130.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest 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 Grand Junction, there are 2.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest 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.

September is the wettest month in Grand Junction with 1.2 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Winter with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 9.9 inches in Grand Junction means that it is one of the driest 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.

April is the rainiest month in Grand Junction with 6.9 days of rain, and June is the driest month with only 3.8 rainy days. There are 68.9 rainy days annually in Grand Junction, which is less rainy than most places in Colorado. The rainiest season is Summer when it rains 28% of the time and the driest is Spring with only a 22% chance of a rainy day.

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.

An annual snowfall of 15.8 inches in Grand Junction means that it is one of the least snowy places in Colorado.

An annual snowfall of 17.5 inches in Boise means that it is less snowy than most places in Idaho.
December is the snowiest month in Grand Junction with 4.3 inches of snow, and 6 months of the year have significant snowfall.

December is the snowiest month in Boise with 6.4 inches of snow, and 5 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 Grand Junction    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

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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

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Zips In Grand Junction, Colorado
81501, 81503, 81506, 81505
Zips In BOISE CITY, IDAHO
83709, 83704, 83706, 83713, 83705, 83702, 83716, 83703, 83712
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