2025 Compare Climate & Weather:
St. George, UT vs Boise City, ID

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Highlights

On average, there are 206 sunny days per year in Boise City. St. George averages 255 sunny days per year. The US average is 205 sunny days.

Boise City, Idaho gets 13 inches of rain, on average, per year. St. George, Utah gets 10 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. St. George averages 1.5 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

St. George, Utah
Summer High: the July high is around 101.2 degrees
Winter Low: the January low is 28.9
Rain: averages 10 inches of rain a year
Snow: averages 1.5 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.

St. George

The annual BestPlaces Comfort Index for St. George is 7.5 (10=best), which means it is one of the most pleasant places in Utah.

7.5 / 10
April, October and May are the most pleasant months in St. George, while July and August are the least comfortable months.

Today's Weather - St. George, UT

8 AM PST

Showers And Thunderstorms Likely

57°F

DAYDESCRIPTIONHIGH / LOWWIND
TodayShowers And Thunderstorms Likely72° / 53°SE 0 to 3 mph
WednesdaySunny79° / 57°SW 3 mph
ThursdaySunny87° / 61°SSE 2 mph
FridaySunny93° / 65°E 2 mph
SaturdaySunny97° / 67°ESE 5 mph
SundayMostly Sunny94° / 65°SSE 3 to 13 mph
MondaySunny89° / 61°S 5 to 16 mph
Today's Weather - Boise City, ID

8 AM PST

Sunny

50°F

DAYDESCRIPTIONHIGH / LOWWIND
TodaySunny72° / 49°WSW 5 mph
WednesdaySunny80° / 52°SE 3 to 7 mph
ThursdaySunny79° / 53°NW 3 to 7 mph
FridaySunny89° / 58°SSE 5 mph
SaturdayMostly Sunny94° / 62°SE 5 to 8 mph
SundayPartly Sunny then Slight Chance Rain Showers86° / 54°S 5 to 10 mph
MondayChance Rain Showers74° / 47°W 5 to 10 mph
Average Monthly High / Low (°F)
MonthSt. George, UTBoise City, ID
January55° / 29°38° / 24°
February60° / 33°46° / 27°
March68° / 39°56° / 33°
April76° / 45°64° / 38°
May86° / 54°73° / 45°
June96° / 61°82° / 52°
July101° / 68°92° / 58°
August99° / 67°90° / 56°
September92° / 58°80° / 48°
October78° / 46°66° / 39°
November64° / 35°49° / 31°
December54° / 28°38° / 23°
Hot, Freezing, Rainy, Snowy Days: St. George / Boise City
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 021 / 245 / 100 / 4
February0 / 012 / 206 / 90 / 2
March0 / 06 / 135 / 100 / 1
April2 / 02 / 73 / 90 / 0
May11 / 20 / 22 / 80 / 0
June25 / 70 / 01 / 50 / 0
July30 / 200 / 03 / 30 / 0
August30 / 170 / 03 / 20 / 0
September19 / 50 / 13 / 40 / 0
October2 / 02 / 64 / 60 / 0
November0 / 011 / 163 / 110 / 2
December0 / 022 / 264 / 110 / 4
July is the hottest month for St. George with an average high temperature of 101.2°, which ranks it as one of the hottest places in Utah. In St. George, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. George are October, April and May.

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.
December has the coldest nighttime temperatures for St. George with an average of 28.1°. This is one of the warmest places in Utah.

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

In St. George, there are 118.3 days annually when the high temperature is over 90°, which is one of the hottest places in Utah.

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 St. George, there are 76.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Utah.

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 St. George, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Utah.

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

February is the wettest month in St. George with 1.5 inches of rain, and the driest month is June with 0.2 inches. The wettest season is Spring with 39% of yearly precipitation and 16% occurs in Autumn, which is the driest season. The annual rainfall of 10.0 inches in St. George means that it is drier than most places in Utah.


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.

February is the rainiest month in St. George with 5.9 days of rain, and June is the driest month with only 1.4 rainy days. There are 42.6 rainy days annually in St. George, which is one of the least rainy places in Utah. The rainiest season is Spring when it rains 35% of the time and the driest is Autumn with only a 18% 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 1.5 inches in St. George means that it is one of the least snowy places in Utah.

An annual snowfall of 17.5 inches in Boise means that it is less snowy than most places in Idaho.
January is the snowiest month in St. George with 0.5 inches of snow, and 1 month 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 St. George    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 St. George, Utah
84790, 84770
Zips In BOISE CITY, IDAHO
83709, 83704, 83706, 83713, 83705, 83702, 83716, 83703, 83712
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