Delaware (OH) Weather & Climate: Best Time to Visit

In Delaware, temperatures differ significantly between summer and winter months. Average maximum daytime temperatures range from a comfortable 28°C (82°F) in July, the warmest time of the year, to a very cold 1°C (34°F) during cooler months like January.

At night, you can expect temperatures ranging from 17°C (63°F) in July to around -8°C (18°F) during January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Delaware experiences significant rain/snowfall throughout the year, averaging 1066 mm (42 in) of precipitation annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives high rainfall, averaging 143 mm (5.6 in) of precipitation, recorded across 13 rainy days. In contrast, the driest month January brings less snow/rainfall, with 61 mm (2.4 in) over 14 snowy/rainy days. For more details, please visit our Delaware Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Seasonal changes in sunshine hours are quite dramatic in Delaware. While July receives considerable daily sunshine with up to 8.7 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.8 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine

Daily percentage of sunshine

The relative humidity is high throughout the year in Delaware.

The city experiences its highest humidity in December, reaching 74%. In April, the humidity drops to its lowest level at 62%. What does this mean? Read our detailed page on humidity levels for further details.

Relative humidity over the year