Santa Rosa, California vs South San Francisco Climate
69%matchOn climate, South San Francisco is a 69% match for Santa Rosa. Compared with Santa Rosa, South San Francisco has 13°F (7°C) cooler summer days and 5°F (3°C) milder winter nights.
Santa Rosa gets 32 in (822 mm) of rain a year and South San Francisco 23 in (585 mm). Santa Rosa's warmest month is July, at 85°F (29°C); South San Francisco's is September, at 74°F (24°C).
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
Santa RosaSouth San Franciscosolid = high, dashed = low
Rain (in per month)
Santa RosaSouth San Francisco
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Santa Rosa | South San Francisco | Santa Rosa | South San Francisco | Santa Rosa | South San Francisco | |
| Jan | 59°F(15°C) | 58°F(15°C) | 40°F(4°C) | 44°F(7°C) | 6.3 in(160 mm) | 4.8 in(121 mm) |
| Feb | 64°F(18°C) | 61°F(16°C) | 41°F(5°C) | 46°F(8°C) | 6.5 in(165 mm) | 4.6 in(117 mm) |
| Mar | 66°F(19°C) | 64°F(18°C) | 43°F(6°C) | 47°F(8°C) | 4.6 in(116 mm) | 3.1 in(80 mm) |
| Apr | 71°F(22°C) | 66°F(19°C) | 44°F(7°C) | 48°F(9°C) | 1.9 in(48 mm) | 1.5 in(38 mm) |
| May | 76°F(25°C) | 68°F(20°C) | 48°F(9°C) | 50°F(10°C) | 1.2 in(31 mm) | 0.6 in(16 mm) |
| Jun | 83°F(28°C) | 71°F(22°C) | 52°F(11°C) | 53°F(12°C) | 0.3 in(8 mm) | 0.2 in(5 mm) |
| Jul | 85°F(29°C) | 71°F(22°C) | 53°F(11°C) | 54°F(12°C) | 0.0 in(1 mm) | 0.0 in(1 mm) |
| Aug | 85°F(29°C) | 72°F(22°C) | 53°F(12°C) | 55°F(13°C) | 0.1 in(2 mm) | 0.0 in(1 mm) |
| Sep | 85°F(29°C) | 74°F(24°C) | 52°F(11°C) | 55°F(13°C) | 0.2 in(4 mm) | 0.1 in(3 mm) |
| Oct | 79°F(26°C) | 72°F(22°C) | 47°F(8°C) | 51°F(11°C) | 1.7 in(43 mm) | 1.2 in(30 mm) |
| Nov | 67°F(20°C) | 65°F(18°C) | 42°F(5°C) | 47°F(8°C) | 3.4 in(87 mm) | 2.4 in(62 mm) |
| Dec | 59°F(15°C) | 59°F(15°C) | 38°F(4°C) | 44°F(7°C) | 6.2 in(157 mm) | 4.4 in(111 mm) |
1991–2020 averages, by calendar month.