McHenry Weather in September

September in McHenry typically sees daytime highs of 21°C (70°F) and nighttime lows of 11°C (52°F). Rainfall is also possible this month, so it's worth packing an umbrella.

Rainfall in McHenry in September

Based on our climate data of the past 30 years, about 12 days of rain are anticipated, with 80 mm (3.1 in) on average. Neither particularly heavy nor particularly frequent, the rain this month is about average. A light jacket should be enough on most wet days.

Temperature in McHenry in September

McHenry has perfect weather in September, with days reaching 21°C (70°F) and nights cooling to 11°C (52°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 11°C (52°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in McHenry in September

Enjoy a sunny month with about 199 hours of sunshine, the clear skies make McHenry even more beautiful.

If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.

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For a detailed overview over the year and the best time to visit the United States of America, check out our McHenry's climate page.

McHenry Temperature in September

Min Temperature 11°C (52°F)  

Max Temperature 21°C (70°F)  

Chance of Rain 40%  

Precipitation 80 mm (3.1 in)  

Rainy days 12 days  

Sunshine 199 hours *  

Percentage Sunshine *  

* Data from: Frostburg, the United States of America (38 KM, 23 Miles).

What to Wear in McHenry in September

For McHenry in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.

What To Do in McHenry in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

9/10

Walking

9/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit the United States of America, check out our McHenry's climate page.

More climate data for McHenry

Temperature Rainfall Sunshine

See the full McHenry climate overview or explore weather in the United States of America.