Grasonville (MD) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Grasonville.
Climate overview of Grasonville
Temperatures in Grasonville, Maryland, United States of America, vary greatly throughout the year. July is the hottest month at 31°C (88°F), while January is the coldest at 6°C (43°F).
The city has a wet climate, receiving around 1207 mm (48 in) of rain/snowfall per year. Despite the high annual total, it has very warm summers and cold winters. June is the wettest month. Sunshine peaks in June, when the city sees around 9.4 hours of sunshine per day.
Grasonville Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Grasonville - and find the best time to visit.
Monthly Temperature in Grasonville
The climate in Grasonville is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 31°C (88°F) in July to a chilly 6°C (43°F) in January.
Nighttime temperatures range from 22°C (72°F) in July to -2°C (28°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Grasonville
Grasonville has a notably wet climate with abundant precipitation, recording 1207 mm (48 in) of rain/snowfall per year. The seasons in Grasonville bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 142 mm (5.6 in) of precipitation. This rainfall is distributed across 14 rainy days.
In contrast, the driest month, February, experiences much less rainfall, totaling 64 mm (2.5 in) over 11 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Grasonville Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Grasonville
In Grasonville, summer days are longer and more sunny, with daily sunshine hours peaking at 9.4 hours in June. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.3 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Grasonville by Month
The relative humidity is high throughout the year in Grasonville.
The city experiences its highest humidity in August, reaching 69%. In March, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Grasonville
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May
- Warmest weather: July and August
- Most sunshine: June and July
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -2°C (28°F).
Frequently asked questions about the climate in Grasonville
What is the best time to visit Grasonville?
May typically offers the most optimal weather in Grasonville. In contrast, January, February and December tend to have less optimal conditions. Grasonville has very warm summers and cold winters.
What temperatures can I expect in Grasonville?
Daytime highs range from 6°C (43°F) in January to 31°C (88°F) in July. Nighttime lows range from -2°C (28°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Grasonville get?
Annual rainfall is around 1207 mm (48 in). June is the wettest month with 142 mm (5.6 in), while February is the driest with 64 mm (2.5 in).
How sunny is Grasonville?
Grasonville receives around 2,520 hours of sunshine per year. June is the sunniest month with 282 hours, while December is the cloudiest with just 130 hours. Overall, Grasonville enjoys abundant sunshine.
Grasonville 3-Day Forecast
Grasonville (MD) 3-Day Forecast
Grasonville on the map
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