Martinez weather by month
What a typical year looks like in Martinez, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at RICHMOND, 25 km from Martinez; records cover 1950–2026.
The year at a glance
- Precipitation a year
- 24.4 in620 mm
- Snow a year
- Rare
- Last spring freeze
- Rare
- First fall freeze
- Rare
- Heating degree days
- 2,460
- Cooling degree days
- 217
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 36°2° (heating, 99%) and 91°33° (cooling, 1%).
Month by month
Martinez in January
Highs average 58°15° and lows 44°7°, with 4.8 in123 mm of precipitation in a typical January.
- Record high
- 78°26° (2015)
- Record low
- 27°−3° (1982)
- Heating degree days
- 429
- Cooling degree days
- 0
Martinez in February
Highs average 61°16° and lows 46°8°, with 4.8 in121 mm of precipitation in a typical February.
- Record high
- 81°27° (2018)
- Record low
- 28°−2° (1956)
- Heating degree days
- 319
- Cooling degree days
- 0
Martinez in March
Highs average 64°18° and lows 47°9°, with 3.2 in81 mm of precipitation in a typical March.
- Record high
- 88°31° (2026)
- Record low
- 33°1° (1951)
- Heating degree days
- 289
- Cooling degree days
- 2
Martinez in April
Highs average 67°20° and lows 49°10°, with 1.6 in40 mm of precipitation in a typical April.
- Record high
- 94°34° (2004)
- Record low
- 31°−1° (1976)
- Heating degree days
- 211
- Cooling degree days
- 8
Martinez in May
Highs average 69°21° and lows 52°11°, with 0.72 in18 mm of precipitation in a typical May.
- Record high
- 100°38° (1976)
- Record low
- 38°3° (1977)
- Heating degree days
- 156
- Cooling degree days
- 16
Martinez in June
Highs average 72°22° and lows 54°12°, with 0.27 in6.9 mm of precipitation in a typical June.
- Record high
- 106°41° (2000)
- Record low
- 43°6° (1975)
- Heating degree days
- 89
- Cooling degree days
- 29
Martinez in July
Highs average 71°22° and lows 55°13°, with 0 in0 mm of precipitation in a typical July.
- Record high
- 98°37° (1970)
- Record low
- 44°7° (1984)
- Heating degree days
- 85
- Cooling degree days
- 23
Martinez in August
Highs average 72°22° and lows 56°13°, with 0.07 in1.8 mm of precipitation in a typical August.
- Record high
- 103°39° (2010)
- Record low
- 44°7° (1983)
- Heating degree days
- 65
- Cooling degree days
- 35
Martinez in September
Highs average 75°24° and lows 56°13°, with 0.03 in0.8 mm of precipitation in a typical September.
- Record high
- 107°42° (1971)
- Record low
- 43°6° (1983)
- Heating degree days
- 48
- Cooling degree days
- 62
Martinez in OctoberThis month
Highs average 73°23° and lows 54°12°, with 1.4 in36 mm of precipitation in a typical October.
- Record high
- 100°38° (1980)
- Record low
- 41°5° (1956)
- Heating degree days
- 93
- Cooling degree days
- 39
Martinez in November
Highs average 65°18° and lows 49°9°, with 2.7 in68 mm of precipitation in a typical November.
- Record high
- 89°32° (2010)
- Record low
- 34°1° (1952)
- Heating degree days
- 251
- Cooling degree days
- 3
Martinez in December
Highs average 58°15° and lows 44°7°, with 4.9 in124 mm of precipitation in a typical December.
- Record high
- 76°24° (1967)
- Record low
- 24°−4° (1972)
- Heating degree days
- 425
- Cooling degree days
- 0