Rocky Grove Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rocky Grove.
Climate overview of Rocky Grove
Rocky Grove, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 28°C (82°F) in July, while winters cool to 8°C (46°F) in January.
With around 1466 mm (58 in) of annual rain/snowfall, Rocky Grove has a notably wet climate. The wettest month is July. The sunniest month is June, with 9.7 hours of sunshine per day on average.
Rocky Grove Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rocky Grove — and find the best time to visit.
Monthly Temperature in Rocky Grove
Depending on the time of the year, temperatures range from comfortable to chilly in Rocky Grove. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a chilly 8°C (46°F).
At night, temperatures range from around 16°C (61°F) in July to -4°C (25°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rocky Grove
Rocky Grove has a relatively rain/snowy climate with high precipitation levels, averaging 1466 mm (58 in) of rain/snowfall annually. Rocky Grove experiences moderate seasonal variation in rainfall, with monthly averages ranging from 174 mm (6.9 in) in July, the wettest month, and 92 mm (3.6 in) in February, the driest month. For more details, please visit our Rocky Grove 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 Rocky Grove
Rocky Grove can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 9.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.2 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
Humidity in Rocky Grove by Month
The relative humidity is high throughout the year in Rocky Grove.
The city experiences its highest humidity in July, reaching 76%. In April, the humidity drops to its lowest level at 63%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Rocky Grove
Rainfall during this time ranges from 97 mm (3.8 in) in October to 120 mm (4.7 in) in April. This means you can expect a mix of sunny days and occasional showers.
The rainy season falls during July, bringing heavy precipitation. Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Rocky Grove
What is the best time to visit Rocky Grove?
October typically offers the most optimal weather in Rocky Grove. In contrast, January, February and December tend to have less optimal conditions.
What temperatures can I expect in Rocky Grove?
Daytime highs range from 8°C (46°F) in January to 28°C (82°F) in July. Nighttime lows range from -4°C (25°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Rocky Grove get?
Annual rainfall is around 1466 mm (58 in). July is the wettest month with 174 mm (6.9 in), while February is the driest with 92 mm (3.6 in).
How sunny is Rocky Grove?
Rocky Grove receives around 2,618 hours of sunshine per year. June is the sunniest month with 290 hours, while December is the cloudiest with just 125 hours. Overall, Rocky Grove enjoys abundant sunshine.
Rocky Grove 3-Day Forecast
Rocky Grove 3-Day Forecast
Rocky Grove on the map
Rocky Grove is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
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