Cromwell Weather in September

Cromwell in September sees high daytime temperatures of 25°C (77°F) and nighttime lows of 13°C (55°F). With just 90 mm (3.5 in) of rainfall on average, it's the driest month of the year.

Rainfall in Cromwell in September

With the driest weather of the year, this month is ideal for outdoor fun. You can expect rain on around 10 days based on historical patterns, with 90 mm (3.5 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Cromwell in September

Weather in Cromwell is at its perfect in September. Highs reach 25°C (77°F), while nights settle around 13°C (55°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 13°C (55°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Cromwell in September

Expect sunny days throughout the month, with an estimated 223 hours of sunshine. This makes it a pleasant time to visit Cromwell.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. May and September typically offer the best weather for Cromwell.

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• January
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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 Cromwell's climate page.

Cromwell Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 25°C (77°F)  

Chance of Rain 33%  

Precipitation 90 mm (3.5 in)  

Rainy days 10 days  

Humidity 72% *  

Sunshine 223 hours *  

Percentage Sunshine 60% *  

* Data from: Hartford, the United States of America (19 KM, 11 Miles).

What to Wear in Cromwell 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. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Cromwell 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 Cromwell's climate page.

More climate data for Cromwell

Temperature Rainfall Sunshine Humidity

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