Greybull (WY) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Greybull.
Climate overview of Greybull
Greybull, Wyoming, United States of America, sees big temperature differences between seasons, with July peaking at 33°C (91°F) and December dropping to -2°C (28°F).
With just 170 mm (6.7 in) of annual rain/snowfall, the city has a dry, desert-like climate.
Greybull Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Greybull - and find the best time to visit.
Monthly Temperature in Greybull
Visitors to Greybull can expect significant temperature changes throughout the year. Average daytime temperatures reach a very warm 33°C (91°F) in July. In December, the coolest month of the year, temperatures drop to a very cold -2°C (28°F).
At night, temperatures range from around 14°C (57°F) in July to -15°C (5°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Greybull
Greybull experiences desert-like conditions in terms of precipitation with almost no rain/snowfall, generally receiving 170 mm (6.7 in) annually. Greybull can be quite wet during May, receiving approximately 39 mm (1.5 in) of precipitation over 10 rainy days.
In contrast, during the driest month (February), you will experience much drier conditions, with 5.3 mm (0.2 in) of precipitation spread across 3 snowy/rainy days. For more details, please visit our Greybull Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Greybull
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June and September
- Warmest weather: July
- Seasonal pattern: Very little rainfall year-round, with very warm summers and very cold winters
- Coldest conditions: December, with freezing nights around -15°C (5°F).
Frequently asked questions about the climate in Greybull
What is the best time to visit Greybull?
May, June and September typically offer the most optimal weather in Greybull. In contrast, January, February and December tend to have less optimal conditions. Greybull has very little rainfall year-round, with very warm summers and very cold winters.
What temperatures can I expect in Greybull?
Daytime highs range from -2°C (28°F) in December to 33°C (91°F) in July. Nighttime lows range from -15°C (5°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Greybull get?
Annual rainfall is around 170 mm (6.7 in). May is the wettest month with 39 mm (1.5 in), while February is the driest with 5.3 mm (0.2 in).
Greybull 3-Day Forecast
Greybull (WY) 3-Day Forecast
Greybull on the map
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