McHenry (MD) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit McHenry.
Climate overview of McHenry
McHenry, Maryland, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 25°C (77°F) in July, while winters cool to 0°C (32°F) in January.
Rain/snowfall is high, totalling around 1330 mm (52 in) per year. June is the wettest month and November the driest. The city also experiences warm summers and very cold winters. The most sunshine falls in July, with an average of 8.5 hours of daily sunshine.
McHenry Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in McHenry - and find the best time to visit.
Monthly Temperature in McHenry
Depending on the time of the year, temperatures range from comfortable to very cold in McHenry. Average maximum daytime temperatures range from a comfortable 25°C (77°F) in July, the warmest time of the year, to a very cold 0°C (32°F) during cooler months like January.
At night, you can expect temperatures ranging from 15°C (59°F) in July to around -9°C (16°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in McHenry
McHenry has a relatively rain/snowy climate with high precipitation levels, averaging 1330 mm (52 in) of rain/snowfall annually. While rainfall varies throughout the year, each season offers its own charm. June brings wetter days averaging 147 mm (5.8 in) of precipitation, spread over 17 rainy days.
In contrast, the driest month November experiences a drier climate, with about 74 mm (2.9 in) of rainfall spread across 13 rainy days. For more details, please visit our McHenry 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 McHenry
Seasonal changes in sunshine hours are quite dramatic in McHenry. While July receives considerable daily sunshine with up to 8.5 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.6 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit McHenry
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: August, September, October and November
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -9°C (16°F).
Frequently asked questions about the climate in McHenry
What is the best time to visit McHenry?
September typically offers the most optimal weather in McHenry. In contrast, January, February, March, November and December tend to have less optimal conditions. McHenry has warm summers and very cold winters.
What temperatures can I expect in McHenry?
Daytime highs range from 0°C (32°F) in January to 25°C (77°F) in July. Nighttime lows range from -9°C (16°F) to 15°C (59°F). Temperatures vary considerably through the year.
How much rain does McHenry get?
Annual rainfall is around 1330 mm (52 in). June is the wettest month with 147 mm (5.8 in), while November is the driest with 74 mm (2.9 in).
How sunny is McHenry?
McHenry receives around 2,022 hours of sunshine per year. July is the sunniest month with 255 hours, while December is the cloudiest with just 78 hours. Overall, McHenry enjoys abundant sunshine.
McHenry 3-Day Forecast
McHenry on the map
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