Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Rocklin (CA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rocklin.
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Climate overview of Rocklin
The climate in Rocklin, California, United States of America, is marked by large temperature swings across the seasons, ranging from 36°C (97°F) in July to 13°C (55°F) in December.
Annual rainfall is moderate at around 515 mm (20 in), with December being the wettest month. The city also has a distinct dry season from May to October, with very hot summers and mild winters. July is the sunniest month, averaging 14.7 hours of sunshine per day.
Rocklin Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rocklin - and find the best time to visit.
Monthly Temperature in Rocklin
In Rocklin, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very hot 36°C (97°F) in July. In December, the coolest month of the year, temperatures drop to a moderate 13°C (55°F).
At night, temperatures range from around 16°C (61°F) in July to 3°C (37°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rocklin
On average, Rocklin receives a reasonable amount of rainfall, with an annual precipitation of 515 mm (20 in). Rocklin can be quite wet during December, receiving approximately 109 mm (4.3 in) of precipitation over 12 rainy days.
In contrast, during the driest month (July), you will experience much drier conditions, with 0.1 mm (0 in) of precipitation spread across 0 rainy days. For more details, please visit our Rocklin 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 Rocklin
Rocklin can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 14.7 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 4.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Sacramento, the United States of America (32 KM, 20 Miles).
Daily hours of sunshine
Data from: Sacramento, the United States of America (32 KM, 20 Miles).
Daily percentage of sunshine
Data from: Sacramento, the United States of America (32 KM, 20 Miles).
Humidity in Rocklin by Month
The relative humidity is high throughout the year in Rocklin.
The city experiences its highest humidity in January, reaching 83%. In July, the humidity drops to its lowest level at 53%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Sacramento, the United States of America (32 KM, 20 Miles).
Best Time to Visit Rocklin
For comfortable weather, consider visiting Rocklin in April, May and October. Conditions are usually least favourable in July, August and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
good
Feb
good
Mar
very good
Apr
excellent
May
excellent
Jun
very good
Jul
very hot
Aug
very hot
Sep
very good
Oct
excellent
Nov
very good
Dec
wet
- Best overall: April, May and October
- Warmest weather: July and August
- Most sunshine: June and July
- Fewest rainy days: June, July, August and September
- Wettest months: January, February, March, April, November and December, when rainfall is highest.
- Seasonal pattern: A distinct dry season from May to October, with very hot summers and mild winters
Frequently asked questions about the climate in Rocklin
What is the best time to visit Rocklin?
April, May and October typically offer the most optimal weather in Rocklin. In contrast, July, August and December tend to have less optimal conditions. Rocklin has a distinct dry season from May to October, with very hot summers and mild winters.
What temperatures can I expect in Rocklin?
Daytime highs range from 13°C (55°F) in December to 36°C (97°F) in July. Nighttime lows range from 3°C (37°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Rocklin get?
Annual rainfall is around 515 mm (20 in). December is the wettest month with 109 mm (4.3 in), while July is the driest with 0.1 mm (0 in).
How sunny is Rocklin?
Rocklin receives around 3,602 hours of sunshine per year. July is the sunniest month with 440 hours, while December is the cloudiest with just 141 hours. Overall, Rocklin enjoys abundant sunshine.
Rocklin 3-Day Forecast
Rocklin on the map
Rocklin is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
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