The best times to visit Riverton for ideal weather are

May 28th to October 7th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Riverton Travel Info

Weather in Riverton


Average temperatures in Riverton vary an incredible amount. Considering humidity, temperatures feel cold for about half of the year and otherwise nice with a very low chance of rain or snow throughout the year. The area is somewhat temperate — in the 46th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Riverton, the hottest months are July, August, and then June. See average monthly temperatures below. The warmest time of year is generally mid July where highs are regularly around 92°F (33.3°C) with temperatures rarely dropping below 56.4°F (13.6°C) at night.

Riverton Temperatures (Fahrenheit)


Riverton Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Riverton Perceived Temperature (F)


Riverton Perceived Temperature (C)



Average Riverton Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 33.6 19.8 7.7
Feb 39.2 24.9 12.7
Mar 53.2 37.4 23.5
Apr 60.3 43.6 29.1
May 68.5 52.5 38.2
Jun 81.7 64.4 47.5
Jul 90.3 73 55.9
Aug 88 70.5 53.8
Sep 78.9 60.9 45
Oct 61.6 46 33
Nov 47.7 32.6 19.4
Dec 32.6 19.3 7.5

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 0.9 -6.8 -13.5
Feb 4 -3.9 -10.7
Mar 11.8 3 -4.7
Apr 15.7 6.4 -1.6
May 20.3 11.4 3.4
Jun 27.6 18 8.6
Jul 32.4 22.8 13.3
Aug 31.1 21.4 12.1
Sep 26.1 16.1 7.2
Oct 16.4 7.8 0.6
Nov 8.7 0.3 -7
Dec 0.3 -7.1 -13.6



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Riverton are January, November, and then August. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early to mid January. For example, on the week of January 8th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in late May with an average of 2 days of significant precipitation the week of May 21st.

When can you find snow in Riverton? Weather stations report large amounts of snow likely to be deepest around September, especially close to late September. The best time to ski (if at all) in Riverton is often around around November 19th when fresh powder is deepest. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Riverton.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Riverton (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 1% 2.7 0.2
Feb 6% 2.3 0.4
Mar 5% 1.9 0.4
Apr 9% 2.2 1
May 19% 3.1 2.6
Jun 8% 0 0.8
Jul 6% 0 0.7
Aug 4% 0 0.4
Sep 5% 5.1 0.7
Oct 6% 3.1 0.9
Nov 3% 2.3 0.3
Dec 5% 2.1 0.4

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 1 6.9 0.5
Feb 6 5.8 1
Mar 5 4.8 1
Apr 9 5.6 2.5
May 19 7.9 6.6
Jun 8 0 2
Jul 6 0 1.8
Aug 4 0 1
Sep 5 13 1.8
Oct 6 7.9 2.3
Nov 3 5.8 0.8
Dec 5 5.3 1


Humidity and Wind

Riverton has some comfortably humid months, and dry months in the opposite season. The least humid month is July (24.5% relative humidity), and the most humid month is December (55.3%).

Wind in Riverton is usually moderate. The windiest month is April, followed by March and May. April’s average wind speed of around 8.8 knots (10.2 MPH or 16.4 KPH) is considered “a gentle breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in late March where average top sustained speeds reach 22.7 knots, which is considered a strong breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Riverton.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 6.1 Light breeze 14.2 Significant breeze
Feb 6.6 Light breeze 15.2 Significant breeze
Mar 8.2 Gentle breeze 18.7 Significant breeze
Apr 8.8 Gentle breeze 19.6 Strong breeze
May 8 Gentle breeze 18.5 Significant breeze
Jun 7.9 Gentle breeze 19.3 Strong breeze
Jul 7.2 Gentle breeze 18.5 Significant breeze
Aug 7.1 Gentle breeze 17.3 Strong breeze
Sep 7 Gentle breeze 16.1 Significant breeze
Oct 7 Gentle breeze 15.5 Significant breeze
Nov 6.6 Light breeze 15.4 Significant breeze
Dec 5.7 Light breeze 13.6 Significant breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 54.1%
Feb 49.4%
Mar 35.4%
Apr 33.7%
May 38%
Jun 29.3%
Jul 24.5%
Aug 24.7%
Sep 28.6%
Oct 41.4%
Nov 43.4%
Dec 55.3%


Is it Safe to Travel to Riverton?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Riverton, WY, US is July, followed by June and August. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Riverton in December. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is extrapolated based on nearby areas. Displayed data is calculated relative to the peak, so a score of 36.5 in December means 36.5% of the tourists vs. July.



Overall Riverton Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderately cold. Highs range from 74.5°F (23.6°C) and 41.9°F (5.5°C) with warmer temperatures in the later months. Rain is rare with 2 to 6 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see moderate precipitation with 1 to 2 days of precipitation per month. June – August is the busiest season for tourism in Riverton, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 81.5°F (27.5°C) and 40.4°F (4.7°C), which will feel chilly given the humidity and wind. It rains or snows a normal amount: 1 to 2 days per month. Tourism is fairly slow during these months due to the weather, so hotels may be lower priced.

Winter (December through February)

Weather is far too cold this time of year in Riverton to be enjoyable for warm weather travelers. The average high during this season is between 43.1°F (6.2°C) and 28°F (-2.2°C). On average, it rains or snows a smalll amount: 0 to 2 times per month. These times of year are the slowest with tourists.


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