Roseville climate
Roseville (California, United States) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 18 °C64 °F, and about 704 mm28 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Roseville climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1458 | 541 | 1049 | 1144.5 |
| Feb | 1660 | 642 | 1151 | 1194.7 |
| Mar | 1864 | 745 | 1355 | 1064.2 |
| Apr | 2170 | 948 | 1559 | 562.2 |
| May | 2780 | 1254 | 2067 | 301.2 |
| Jun | 3391 | 1661 | 2576 | 80.3 |
| Jul | 3799 | 1966 | 2883 | 10.0 |
| Aug | 3697 | 1865 | 2781 | 10.1 |
| Sep | 3392 | 1762 | 2577 | 50.2 |
| Oct | 2780 | 1355 | 2067 | 371.4 |
| Nov | 1966 | 846 | 1456 | 763.0 |
| Dec | 1457 | 541 | 949 | 1516.0 |
| Year | 3799 | 541 | 1864 | 70428 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 75% | 59% | 2.2 | 9:44 |
| Feb | 75% | 53% | 3.3 | 10:42 |
| Mar | 75% | 50% | 4.6 | 11:50 |
| Apr | 70% | 42% | 6.2 | 13:10 |
| May | 59% | 30% | 7.5 | 14:16 |
| Jun | 45% | 18% | 8.3 | 14:52 |
| Jul | 34% | 11% | 8.2 | 14:37 |
| Aug | 33% | 12% | 7.4 | 13:40 |
| Sep | 34% | 15% | 6.0 | 12:23 |
| Oct | 43% | 30% | 4.3 | 11:06 |
| Nov | 58% | 47% | 2.8 | 9:00 |
| Dec | 71% | 60% | 2.0 | 9:28 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Roseville is like
The warmest month is July, with an average high of 37 °C99 °F and a low of 19 °C66 °F. The coldest is December, when highs average 14 °C57 °F and lows 5 °C41 °F. Seasons are strongly marked: the warmest month is on average 18.7 °C33.7 °F warmer than the coldest.
Annual precipitation is moderate at about 704 mm28 in. The wettest three-month stretch is December–February, which brings 55% of the annual total. Months with less than 20 mm0.8 in on average: June–September. The wettest month is December (151 mm6.0 in), the driest is July (1 mm0.0 in).
Relative humidity ranges from 33% in August to 75% in March. The clearest skies (lowest average cloud amount, 11%) are typical of July. Average wind speed near the ground ranges from 5 km/h (3 mph) in November to 7 km/h (4 mph) in July. Daylight lasts from about 9.5 hours in December to 14.9 hours in June.
Best time to visit Roseville
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April and May and October: average highs of 21 °C70 °F to 27 °C80 °F with 30 mm1.2 in to 56 mm2.2 in of precipitation per month.
The most challenging month is July, which is hot, with average highs of 37 °C99 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Roseville
- Winter (December–February) — highs 1457 to 16 °C60 °F, lows 541 to 6 °C42 °F, about 128 mm5.0 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an umbrella or light rain jacket.
- Spring (March–May) — highs 1864 to 27 °C80 °F, lows 745 to 12 °C54 °F, about 64 mm2.5 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3391 to 37 °C99 °F, lows 1661 to 19 °C66 °F, about 3 mm0.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 1966 to 33 °C92 °F, lows 846 to 17 °C62 °F, about 39 mm1.5 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Roseville compares
Compared with Sacramento, about 26 km to the southwest, Roseville is on average 0.5 °C1 °F warmer and receives 24% more precipitation (704 mm28 in vs 567 mm22 in). The difference is largest in July (1.9 °C3.3 °F warmer).
Of the 222 places in the United States covered by World Climates, Roseville is the 70th warmest by annual mean temperature and the 150th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern: İzmir (Turkey, Csa), Meknes (Morocco, Csa) and Huelva (Spain, Csa).
Nearby places
- Sacramento 26 km · 17 °C63 °F · 567 mm22 in
- Fairfield 86 km · 15 °C60 °F · 467 mm18 in
- Stockton 88 km · 17 °C63 °F · 449 mm18 in
- Antioch 95 km · 15 °C60 °F · 467 mm18 in
- Concord 108 km · 15 °C59 °F · 467 mm18 in
- Vallejo 111 km · 14 °C57 °F · 586 mm23 in
- Chico 118 km · 18 °C64 °F · 791 mm31 in
- Modesto 126 km · 17 °C63 °F · 421 mm17 in
Frequently asked questions
What is the warmest month in Roseville?
July is the warmest month in Roseville, with an average high of 37 °C (99 °F) and an average low of 19 °C (66 °F).
What is the coldest month in Roseville?
December is the coldest month, with an average high of 14 °C (57 °F) and an average low of 5 °C (41 °F).
When does it rain the most in Roseville?
December is the wettest month with about 151 mm (6.0 in) of precipitation; July is the driest with about 1 mm (0.0 in).
What is the best time to visit Roseville?
Judging by long-term averages, the most comfortable months are April and May and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 304 m, while Roseville lies at about 50 m. Temperatures on this page were therefore adjusted by +1.6 °C3 °F using the standard lapse rate of 6.5 °C per 1,000 m.