Williamsville (NY) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Williamsville.
Climate overview of Williamsville
Williamsville, New York State, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 27°C (81°F) in July, while winters cool to -1°C (30°F) in February.
With around 1064 mm (42 in) of annual rain/snowfall, Williamsville has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and very cold winters. The wettest month is October. Sunshine peaks in July, when the city sees around 10.2 hours of sunshine per day.
Williamsville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Williamsville - and find the best time to visit.
Monthly Temperature in Williamsville
Depending on the time of the year, temperatures range from comfortable to very cold in Williamsville. Average daytime temperatures reach a comfortable 27°C (81°F) in July. In February, the coolest month of the year, temperatures drop to a very cold -1°C (30°F).
At night, temperatures range from around 18°C (64°F) in July to -8°C (18°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Williamsville
Williamsville has a relatively rain/snowy climate with high precipitation levels, averaging 1064 mm (42 in) of rain/snowfall annually. Williamsville experiences moderate seasonal variation in rainfall, with monthly averages ranging from 132 mm (5.2 in) in October, the wettest month, and 66 mm (2.6 in) in February, the driest month. For more details, please visit our Williamsville 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 Williamsville
Williamsville can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 10.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.3 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Williamsville by Month
The relative humidity is high throughout the year in Williamsville.
The city experiences its highest humidity in December, reaching 77%. In April, the humidity drops to its lowest level at 67%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Williamsville
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July and August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: February, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Williamsville
What is the best time to visit Williamsville?
May, July and August typically offer the most optimal weather in Williamsville. In contrast, January, February, March, November and December tend to have less optimal conditions. Williamsville has warm summers and very cold winters.
What temperatures can I expect in Williamsville?
Daytime highs range from -1°C (30°F) in February to 27°C (81°F) in July. Nighttime lows range from -8°C (18°F) to 18°C (64°F). Temperatures vary considerably through the year.
How much rain does Williamsville get?
Annual rainfall is around 1064 mm (42 in). October is the wettest month with 132 mm (5.2 in), while February is the driest with 66 mm (2.6 in).
How sunny is Williamsville?
Williamsville receives around 2,211 hours of sunshine per year. July is the sunniest month with 307 hours, while December is the cloudiest with just 68 hours. Overall, Williamsville enjoys abundant sunshine.
Williamsville 3-Day Forecast
Williamsville on the map
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