Hayward vs San Mateo, California Climate
90%matchHayward and San Mateo are a 90% climate match. Compared with Hayward, San Mateo has the same winter lows, 6°F (4°C) cooler summer days and more humid air.
Hayward gets 18 in (447 mm) of rain a year and San Mateo 20 in (511 mm). September is the warmest month in both, with highs of 82°F (28°C) in Hayward and 76°F (24°C) in San Mateo.
Climate fingerprints: ring color = average temperature, thickness = rain. January at the top.
Month by month
Highs and lows (°F)
HaywardSan Mateosolid = high, dashed = low
Rain (in per month)
HaywardSan Mateo
Monthly averages
| Month | High | Low | Rain | |||
|---|---|---|---|---|---|---|
| Hayward | San Mateo | Hayward | San Mateo | Hayward | San Mateo | |
| Jan | 59°F(15°C) | 59°F(15°C) | 43°F(6°C) | 43°F(6°C) | 3.5 in(90 mm) | 4.1 in(105 mm) |
| Feb | 63°F(17°C) | 62°F(17°C) | 44°F(7°C) | 45°F(7°C) | 3.3 in(84 mm) | 3.9 in(98 mm) |
| Mar | 66°F(19°C) | 64°F(18°C) | 46°F(8°C) | 46°F(8°C) | 2.5 in(63 mm) | 2.8 in(72 mm) |
| Apr | 70°F(21°C) | 67°F(20°C) | 48°F(9°C) | 47°F(9°C) | 1.3 in(34 mm) | 1.5 in(37 mm) |
| May | 74°F(23°C) | 69°F(21°C) | 51°F(11°C) | 50°F(10°C) | 0.6 in(14 mm) | 0.6 in(14 mm) |
| Jun | 78°F(26°C) | 73°F(23°C) | 55°F(13°C) | 53°F(12°C) | 0.2 in(4 mm) | 0.2 in(4 mm) |
| Jul | 81°F(27°C) | 74°F(23°C) | 56°F(14°C) | 55°F(13°C) | 0.0 in(1 mm) | 0.0 in(1 mm) |
| Aug | 81°F(27°C) | 75°F(24°C) | 56°F(14°C) | 56°F(13°C) | 0.0 in(1 mm) | 0.0 in(1 mm) |
| Sep | 82°F(28°C) | 76°F(24°C) | 55°F(13°C) | 55°F(13°C) | 0.1 in(2 mm) | 0.1 in(2 mm) |
| Oct | 77°F(25°C) | 73°F(23°C) | 52°F(11°C) | 51°F(10°C) | 1.0 in(26 mm) | 1.1 in(27 mm) |
| Nov | 67°F(20°C) | 65°F(19°C) | 46°F(8°C) | 46°F(8°C) | 1.9 in(48 mm) | 2.2 in(56 mm) |
| Dec | 60°F(16°C) | 59°F(15°C) | 42°F(6°C) | 42°F(6°C) | 3.1 in(80 mm) | 3.7 in(94 mm) |
1991–2020 averages, by calendar month.