McHenry Weather in September

During September, McHenry experiences high daytime temperatures of 23°C (73°F) and cooler nights around 11°C (52°F). Expect quite a bit of rainfall. Around 84 mm (3.3 in) is typical.

Rainfall in McHenry in September

This month experiences about 10 days of rain according to historical data, averaging 84 mm (3.3 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in McHenry in September

Weather in McHenry is at its perfect in September. Highs reach 23°C (73°F), while nights settle around 11°C (52°F). This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With lows of 11°C (52°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.

Sunshine in McHenry in September

The days are predominantly sunny, with an estimated total of around 226 hours of sunshine. These sun-filled days are perfect for playing sports, visiting parks, or going for a bike ride.

If your ideal day consists of dry skies and pleasant temperatures, September typically offers the best circumstances for McHenry.

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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 23°C (73°F)  

Chance of Rain 33%  

Precipitation 84 mm (3.3 in)  

Rainy days 10 days  

Humidity 71% *  

Sunshine 226 hours *  

Percentage Sunshine 60% *  

* Data from: Chicago, the United States of America (49 KM, 30 Miles).

What to Wear in McHenry in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in McHenry in September

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

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

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 Humidity

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