Romeoville Weather in May
What's the weather like in Romeoville (Illinois) in May 2024?
The climate in Romeoville during May can be summarized as mild and a little damp.
May is in the spring in Romeoville and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 22°C (72°F), whilst at night 9°C (48°F) is normal.
| Daytime temperature | 22°C 71.5°F |
|---|---|
| Nightly temperature | 9.1°C 48.3°F |
| Average temperature | 15.5°C 59.9°F |
| Daily sunshine | 9.6 hrs |
| Avg rainfall | 92 mm 3.6 ins |
| Rainy days | 11 days |
| Sea temperature | 8.1°C 46.6°F |
| Humidity | 65% |
| Windspeed | 17.6kph 11 mph |
On average May is the 5th wettest month of the year in Romeoville with around 92mm 3.6 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 9.6 hours of sunshine per day.
May temperatures in Romeoville
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Romeoville in May 2024.
Other monthly averages
Romeoville weather stats
| Hottest month: | July | 28.9°C 84°F |
|---|---|---|
| Driest month: | February | 36mm 1.4ins |
| Sunniest month: | July | 11hrs |
| Coldest month: | January | -1.8°C 28.8°F |
| Wettest month: | July | 103mm 4.1ins |
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