2025 Compare Climate & Weather:
Riverton, WY vs Greeley, CO

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Highlights

On average, there are 244 sunny days per year in Greeley. Riverton averages 231 sunny days per year. The US average is 205 sunny days.

Greeley, Colorado gets 14.8 inches of rain, on average, per year. Riverton, Wyoming gets 9.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Greeley averages 39.5 inches of snow per year. Riverton averages 46.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Greeley, Colorado
Summer High: the July high is around 90.2 degrees
Winter Low: the January low is 14.7
Rain: averages 14.8 inches of rain a year
Snow: averages 39.5 inches of snow a year

Riverton, Wyoming
Summer High: the July high is around 87.3 degrees
Winter Low: the January low is 6
Rain: averages 9.5 inches of rain a year
Snow: averages 46.4 inches of snow a year

BestPlaces Comfort Index

Greeley

The annual BestPlaces Comfort Index for Greeley is 7.2 (10=best), which means it is more comfortable than most places in Colorado.

7.2 / 10

September, June and May are the most pleasant months in Greeley, while December and January are the least comfortable months.

Riverton

The annual BestPlaces Comfort Index for Riverton is 6.9 (10=best), which means it is more comfortable than most places in Wyoming.

6.9 / 10

June, August and July are the most pleasant months in Riverton, while December and January are the least comfortable months.

Average Monthly High / Low (°F)

Month	Riverton, WY	Greeley, CO
January	32° / 6°	44° / 15°
February	38° / 10°	47° / 18°
March	49° / 21°	56° / 26°
April	59° / 29°	64° / 33°
May	68° / 39°	74° / 43°
June	79° / 47°	84° / 52°
July	87° / 53°	90° / 57°
August	86° / 51°	88° / 56°
September	74° / 41°	79° / 46°
October	59° / 30°	66° / 34°
November	43° / 17°	53° / 23°
December	32° / 6°	43° / 15°

Hot, Freezing, Rainy, Snowy Days: Riverton / Greeley

Month	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0 / 0	31 / 30	2 / 4	3 / 4
February	0 / 0	28 / 27	2 / 5	4 / 4
March	0 / 0	28 / 25	3 / 6	4 / 4
April	0 / 0	20 / 12	5 / 8	3 / 2
May	0 / 2	5 / 1	6 / 10	1 / 0
June	3 / 8	0 / 0	5 / 9	0 / 0
July	12 / 17	0 / 0	4 / 7	0 / 0
August	9 / 13	0 / 0	4 / 8	0 / 0
September	1 / 5	4 / 1	4 / 7	0 / 0
October	0 / 0	19 / 11	3 / 6	2 / 1
November	0 / 0	28 / 26	3 / 5	3 / 3
December	0 / 0	31 / 31	2 / 4	4 / 4

July is the hottest month for Riverton with an average high temperature of 87.3°, which ranks it as warmer than most places in Wyoming. In Riverton, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Riverton are June, September and August.

July is the hottest month for Greeley with an average high temperature of 90.2°, which ranks it as warmer than most places in Colorado. In Greeley, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Greeley are September, May and June.

December has the coldest nighttime temperatures for Riverton with an average of 5.8°. This is colder than most places in Wyoming.

December has the coldest nighttime temperatures for Greeley with an average of 14.5°. This is about average compared to other places in Colorado.

In Riverton, there are 25.1 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.

In Greeley, there are 44.6 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Riverton, there are 194.3 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Wyoming.

In Greeley, there are 164.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Colorado.

In Riverton, there are 27.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Wyoming.

In Greeley, there are 8.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Colorado.

May is the wettest month in Riverton with 1.7 inches of rain, and the driest month is January with 0.3 inches. The wettest season is Summer with 38% of yearly precipitation and 10% occurs in Spring, which is the driest season. The annual rainfall of 9.5 inches in Riverton means that it is drier than most places in Wyoming.

May is the wettest month in Greeley with 2.4 inches of rain, and the driest month is February with 0.4 inches. The wettest season is Summer with 37% of yearly precipitation and 9% occurs in Spring, which is the driest season. The annual rainfall of 14.8 inches in Greeley means that it is drier than most places in Colorado.

May is the rainiest month in Riverton with 6.4 days of rain, and December is the driest month with only 2.2 rainy days. There are 44.5 rainy days annually in Riverton, which is one of the least rainy places in Wyoming. The rainiest season is Summer when it rains 32% of the time and the driest is Spring with only a 16% chance of a rainy day.

May is the rainiest month in Greeley with 10.1 days of rain, and January is the driest month with only 4.0 rainy days. There are 76.6 rainy days annually in Greeley, which is less rainy than most places in Colorado. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 16% chance of a rainy day.

An annual snowfall of 46.4 inches in Riverton means that it is about average compared to other places in Wyoming.

An annual snowfall of 39.5 inches in Greeley means that it is less snowy than most places in Colorado.

March is the snowiest month in Riverton with 8.2 inches of snow, and 9 months of the year have significant snowfall.

March is the snowiest month in Greeley with 8.5 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 Riverton 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 Greeley 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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2025 Compare Climate & Weather:
Riverton, WY vs Greeley, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Riverton / Greeley

December has the coldest nighttime temperatures for Riverton with an average of 5.8°. This is colder than most places in Wyoming.

December has the coldest nighttime temperatures for Greeley with an average of 14.5°. This is about average compared to other places in Colorado.

In Riverton, there are 25.1 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.

In Greeley, there are 44.6 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Riverton, there are 27.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Wyoming.

In Greeley, there are 8.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Colorado.

An annual snowfall of 46.4 inches in Riverton means that it is about average compared to other places in Wyoming.

An annual snowfall of 39.5 inches in Greeley means that it is less snowy than most places in Colorado.

March is the snowiest month in Riverton with 8.2 inches of snow, and 9 months of the year have significant snowfall.

March is the snowiest month in Greeley with 8.5 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Riverton 2 Reviews

Reviews for Greeley 2 Reviews

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2025 Compare Climate & Weather:Riverton, WY vs Greeley, CO

Highlights

Weather Highlights

BestPlaces Comfort Index

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Riverton / Greeley

December has the coldest nighttime temperatures for Riverton with an average of 5.8°. This is colder than most places in Wyoming.December has the coldest nighttime temperatures for Greeley with an average of 14.5°. This is about average compared to other places in Colorado.

In Riverton, there are 25.1 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.In Greeley, there are 44.6 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Riverton, there are 27.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Wyoming.In Greeley, there are 8.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Colorado.

An annual snowfall of 46.4 inches in Riverton means that it is about average compared to other places in Wyoming.An annual snowfall of 39.5 inches in Greeley means that it is less snowy than most places in Colorado.

March is the snowiest month in Riverton with 8.2 inches of snow, and 9 months of the year have significant snowfall.March is the snowiest month in Greeley with 8.5 inches of snow, and 9 months of the year have significant snowfall.

DID YOU KNOW?

Reviews for Riverton 2 Reviews

Reviews for Greeley 2 Reviews

Most Recent Searches On Compare Climate & Weather

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Zips In Riverton, Wyoming

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2025 Compare Climate & Weather:
Riverton, WY vs Greeley, CO

December has the coldest nighttime temperatures for Riverton with an average of 5.8°. This is colder than most places in Wyoming.

December has the coldest nighttime temperatures for Greeley with an average of 14.5°. This is about average compared to other places in Colorado.

In Riverton, there are 25.1 days annually when the high temperature is over 90°, which is hotter than most places in Wyoming.

In Greeley, there are 44.6 days annually when the high temperature is over 90°, which is hotter than most places in Colorado.

In Riverton, there are 27.0 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Wyoming.

In Greeley, there are 8.2 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Colorado.

An annual snowfall of 46.4 inches in Riverton means that it is about average compared to other places in Wyoming.

An annual snowfall of 39.5 inches in Greeley means that it is less snowy than most places in Colorado.

March is the snowiest month in Riverton with 8.2 inches of snow, and 9 months of the year have significant snowfall.

March is the snowiest month in Greeley with 8.5 inches of snow, and 9 months of the year have significant snowfall.