2024 Compare Climate & Weather:
Casper, WY vs Idaho Falls, ID
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Highlights
On average, there are 201 sunny days per year in Idaho Falls. Casper averages 220 sunny days per year. The US average is 205 sunny days.
Idaho Falls, Idaho gets 12.2 inches of rain, on average, per year. Casper, Wyoming gets 13 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.
Idaho Falls averages 38.9 inches of snow per year. Casper averages 70.3 inches of snow per year. The US average is 27.8 inches of snow per year.
Weather Highlights
Idaho Falls, Idaho
Summer High: the July high is around 86.2 degrees
Winter Low: the January low is 12.9
Rain: averages 12.2 inches of rain a year
Snow: averages 38.9 inches of snow a year
Casper, Wyoming
Summer High: the July high is around 88.2 degrees
Winter Low: the January low is 15.4
Rain: averages 13 inches of rain a year
Snow: averages 70.3 inches of snow a year
BESTPLACES COMFORT INDEX
Idaho FallsThe annual BestPlaces Comfort Index for Idaho Falls is 6.7 (10=best), which means it is more comfortable than most places in Idaho.
6.7 / 10
June, July and September are the most pleasant months in Idaho Falls, while December and January are the least comfortable months.
CasperThe annual BestPlaces Comfort Index for Casper is 6.8 (10=best), which means it is more comfortable than most places in Wyoming.
6.8 / 10
June, August and September are the most pleasant months in Casper, while December and February are the least comfortable months.
Today's Weather - Casper, WY
2 AM PST
Mostly Clear
40°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Overnight | Mostly Clear | 37° / 71° | WNW 5 mph |
| Saturday Night | Mostly Clear | 41° / 73° | SW 6 mph |
| Sunday Night | Mostly Clear | 43° / 76° | ESE 2 to 9 mph |
| Monday Night | Slight Chance Rain Showers then Partly Cloudy | 46° / 71° | W 10 to 14 mph |
| Tuesday Night | Showers And Thunderstorms Likely | 42° / 60° | NNE 14 mph |
| Wednesday Night | Slight Chance Rain Showers then Partly Cloudy | 39° / 67° | E 8 to 12 mph |
| Thursday Night | Slight Chance Rain Showers then Partly Cloudy | 44° / 71° | W 14 mph |
Today's Weather - Idaho Falls, ID
2 AM PST
Mostly Clear
44°F
| DAY | DESCRIPTION | HIGH / LOW | WIND |
|---|
| Overnight | Mostly Clear | 41° / 73° | SE 9 mph |
| Saturday Night | Mostly Clear | 44° / 76° | SSW 7 to 10 mph |
| Sunday Night | Mostly Clear | 49° / 76° | SSW 14 mph |
| Monday Night | Partly Cloudy | 46° / 69° | SSW 12 to 21 mph |
| Tuesday Night | Partly Cloudy | 42° / 70° | N 9 to 14 mph |
| Wednesday Night | Partly Cloudy | 44° / 73° | S 10 to 15 mph |
| Thursday Night | Mostly Clear | 46° / 73° | SSW 14 to 22 mph |
Average Monthly High / Low (°F)
| Month | Casper, WY | Idaho Falls, ID |
|---|
| January | 37° / 15° | 29° / 13° |
| February | 39° / 17° | 34° / 16° |
| March | 48° / 24° | 48° / 26° |
| April | 57° / 31° | 59° / 33° |
| May | 68° / 40° | 67° / 40° |
| June | 79° / 48° | 77° / 47° |
| July | 88° / 55° | 86° / 52° |
| August | 87° / 54° | 86° / 51° |
| September | 75° / 43° | 75° / 42° |
| October | 60° / 33° | 60° / 33° |
| November | 46° / 24° | 43° / 23° |
| December | 36° / 15° | 30° / 14° |
Hot, Freezing, Rainy, Snowy Days: Casper / Idaho Falls
| Month | Hot Days | Freezing Days | Rainy Days | Snowy Days |
|---|
| January | 0 / 0 | 29 / 30 | 5 / 11 | 6 / 7 |
| February | 0 / 0 | 26 / 27 | 6 / 9 | 6 / 6 |
| March | 0 / 0 | 25 / 25 | 7 / 8 | 6 / 3 |
| April | 0 / 0 | 17 / 14 | 9 / 8 | 5 / 2 |
| May | 0 / 0 | 5 / 4 | 10 / 10 | 1 / 1 |
| June | 4 / 2 | 0 / 0 | 8 / 7 | 0 / 0 |
| July | 13 / 9 | 0 / 0 | 6 / 5 | 0 / 0 |
| August | 11 / 9 | 0 / 0 | 5 / 5 | 0 / 0 |
| September | 1 / 1 | 2 / 2 | 6 / 5 | 1 / 0 |
| October | 0 / 0 | 14 / 15 | 6 / 7 | 3 / 1 |
| November | 0 / 0 | 23 / 26 | 6 / 9 | 5 / 6 |
| December | 0 / 0 | 28 / 30 | 6 / 10 | 6 / 8 |
July is the hottest month for Casper with an average high temperature of 88.2°, which ranks it as warmer than most places in Wyoming. In Casper, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Casper are June, September and August.
July is the hottest month for Idaho Falls with an average high temperature of 86.2°, which ranks it as warmer than most places in Idaho. In Idaho Falls, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Idaho Falls are June, September and August.
January has the coldest nighttime temperatures for Casper with an average of 15.4°. This is one of the warmest places in Wyoming.
January has the coldest nighttime temperatures for Idaho Falls with an average of 12.9°. This is colder than most places in Idaho.
In Casper, there are 29.7 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.
In Idaho Falls, there are 20.2 days annually when the high temperature is over 90°, which is about average compared to other places in Idaho.
In Casper, there are 168.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Wyoming.
In Idaho Falls, there are 172.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Idaho.
In Casper, there are 12.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Wyoming.
In Idaho Falls, there are 10.7 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Idaho.
May is the wettest month in Casper with 2.2 inches of rain, and the driest month is January with 0.5 inches. The wettest season is Summer with 35% of yearly precipitation and 14% occurs in Spring, which is the driest season. The annual rainfall of 13.0 inches in Casper means that it is about average compared to other places in Wyoming.
May is the wettest month in Idaho Falls with 1.7 inches of rain, and the driest month is July with 0.6 inches. The wettest season is Summer with 34% of yearly precipitation and 20% occurs in Autumn, which is the driest season. The annual rainfall of 12.2 inches in Idaho Falls means that it is drier than most places in Idaho.
May is the rainiest month in Casper with 10.0 days of rain, and January is the driest month with only 5.0 rainy days. There are 79.2 rainy days annually in Casper, which is rainier than most places in Wyoming. The rainiest season is Summer when it rains 32% of the time and the driest is Spring with only a 20% chance of a rainy day.
January is the rainiest month in Idaho Falls with 10.5 days of rain, and July is the driest month with only 4.6 rainy days. There are 93.3 rainy days annually in Idaho Falls, which is about average compared to other places in Idaho. The rainiest season is Spring when it rains 32% of the time and the driest is Autumn with only a 19% chance of a rainy day.
An annual snowfall of 70.3 inches in Casper means that it is snowier than most places in Wyoming.
An annual snowfall of 38.9 inches in Idaho Falls means that it is less snowy than most places in Idaho.
March is the snowiest month in Casper with 11.5 inches of snow, and 9 months of the year have significant snowfall.
December is the snowiest month in Idaho Falls with 10.9 inches of snow, and 7 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 Casper 
2 Reviews
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
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
Start Your Review of Casper
Reviews for Idaho Falls 2 Reviews
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
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
Start Your Review of Idaho Falls
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