Green Valley (AZ) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Green Valley.
Climate overview of Green Valley
The climate in Green Valley, Arizona, United States of America, is marked by large temperature swings across the seasons, ranging from 38°C (100°F) in June to 18°C (64°F) in January.
The city tends toward dry conditions, with around 282 mm (11 in) of rain/snowfall per year. It does, however, have a distinct dry season from October to June. May is the sunniest month, averaging 13.4 hours of sunshine per day.
Green Valley Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Green Valley — and find the best time to visit.
Monthly Temperature in Green Valley
In Green Valley, temperatures differ significantly between summer and winter months. Typically, average maximum daytime temperatures range from a very hot 38°C (100°F) in June to a pleasant 18°C (64°F) in the coolest month, January.
Nights vary from 23°C (73°F) in June to around 2°C (36°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Green Valley
Green Valley's climate is marked by below-average rain/snowfall, accumulating 282 mm (11 in) of precipitation yearly. The climate in Green Valley shows significant variation throughout the year. Expect moderate rainfall in July, the wettest month, with an average of 88 mm (3.5 in) of precipitation over 16 rainy days.
In contrast, the driest month May offers drier and sunnier days, with around 2.7 mm (0.1 in) of rainfall over a single rainy day. For more details, please visit our Green Valley Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Green Valley
Green Valley offers a pleasant mix of sunny and slightly overcast days. The difference in sunshine hours between May (13.4 hours daily) and December (8.2 hours daily) provides a bit of variety for visitors and residents.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Green Valley by Month
The relative humidity is low throughout the year in Green Valley.
The city experiences its highest humidity in December, reaching 50%. In June, the humidity drops to its lowest level at 21%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Green Valley
Frequently asked questions about the climate in Green Valley
What is the best time to visit Green Valley?
January, February, March, April, November and December typically offer the most optimal weather in Green Valley. In contrast, June, July, August and September tend to have less optimal conditions. Green Valley has a distinct dry season from October to June.
What temperatures can I expect in Green Valley?
Daytime highs range from 18°C (64°F) in January to 38°C (100°F) in June. Nighttime lows range from 2°C (36°F) to 23°C (73°F). Temperatures vary considerably through the year.
How much rain does Green Valley get?
Annual rainfall is around 282 mm (11 in). July is the wettest month with 88 mm (3.5 in), while May is the driest with 2.7 mm (0.1 in).
How sunny is Green Valley?
Green Valley receives around 3,806 hours of sunshine per year. May is the sunniest month with 401 hours, while December is the cloudiest with just 246 hours. Overall, Green Valley enjoys abundant sunshine.
Green Valley 3-Day Forecast
Green Valley (AZ) 3-Day Forecast
Green Valley on the map
Green Valley is highlighted — select any city to see its climate.
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