Antioch weather by month
Antioch, California, enjoys a classic Mediterranean climate—warm, dry summers and cool, rainy winters. Whether you’re planning a vacation, a move, or simply curious about the local weather patterns, this month‑by‑month guide gives you a clear snapshot of what to expect throughout the year.
January
Jan in Antioch is typically mild and wet. Average highs hover around 58 °F (14 °C) while lows settle near 39 °F (4 °C). Precipitation is common, with roughly 2.5 inches (63 mm) falling over 10 days.
February
The weather in February usually mirrors January’s cool, wet profile. Expect highs of about 61 °F (16 °C) and lows near 40 °F (4 °C), with 2.0 inches (51 mm) of rain over 9 days.
March
Spring begins to soften the chill. Average highs rise to 65 °F (18 °C), and lows rise to 42 °F (6 °C). Rain tapers off, bringing 1.5 inches (38 mm) to a total of 7 precipitation days.
April
April offers pleasant temperatures and increasingly dry conditions. Average highs are 70 °F (21 °C), lows 46 °F (8 °C), and rainfall drops to 1.0 inch (25 mm) across 5 days.
May
May marks the clear‑skies start of summer. Average highs reach 76 °F (24 °C), lows climb to 51 °F (11 °C), and precipitation is low at 0.7 inches (18 mm) over 3 days.
June
Warming trends continue into June. Average highs near 82 °F (28 °C), lows 58 °F (14 °C), and minimal rainfall—0.3 inches (8 mm) spread across 2 days.
July
July is typically the driest, hottest month. Average highs peak around 84 °F (29 °C), lows settle at 61 °F (16 °C), with negligible rain—about 0.1 inch (2 mm) in 1 day.
August
August maintains the July warmth. Expect highs of 84 °F (29 °C), lows near 61 °F (16 °C), and almost no precipitation—0 inches on 0 days.
September
Cooler evenings begin as September starts. Average highs drop slightly to 81 °F (27 °C), lows slide to 58 °F (14 °C), and rain remains minimal—0.2 inches (5 mm) over 1 day.
October
October brings the first real chances of rain. Average highs are 73 °F (23 °C), lows 52 °F (11 °C), with 0.8 inches (20 mm) of rain across 4 days.
November
November sees a return of cooler, wetter weather. Average highs reach 64 °F (18 °C), lows drop to 43 °F (6 °C), and rainfall increases to 1.6 inches (40 mm) over 8 days.
December
December completes the winter cycle. Average highs are 58 °F (14 °C), lows sit at 38 °F (3 °C), with the most precipitation of the year—2.7 inches (69 mm) across 10 days.
Antioch Weather by Month (Table)
| Month | Avg. High (°F) | Avg. Low (°F) | Avg. Precipitation (in) | Precipitation Days |
|---|---|---|---|---|
| January | 58 | 39 | 2.5 | 10 |
| February | 61 | 40 | 2.0 | 9 |
| March | 65 | 42 | 1.5 | 7 |
| April | 70 | 46 | 1.0 | 5 |
| May | 76 | 51 | 0.7 | 3 |
| June | 82 | 58 | 0.3 | 2 |
| July | 84 | 61 | 0.1 | 1 |
| August | 84 | 61 | 0.0 | 0 |
| September | 81 | 58 | 0.2 | 1 |
| October | 73 | 52 | 0.8 | 4 |
| November | 64 | 43 | 1.6 | 8 |
| December | 58 | 38 | 2.7 | 10 |
FAQ
Q1: When is the best time to visit Antioch for outdoor activities?
A1: Late spring (April–May) and early fall (September–October) offer pleasant temperatures and minimal rainfall, ideal for hiking, biking, and waterfront recreation.
Q2: How hot does Antioch get in the summer?
A2: Average high temperatures peak around 84 °F (29 °C) in July and August, with relatively dry conditions.
Q3: Does Antioch experience severe weather like thunderstorms?
A3: Thunderstorms are rare; the region mainly sees light showers, especially in winter. Heat‑related haze can occur during early summer.
Q4: Are there any significant temperature swings in Antioch?
A4: Temperature swings are mild; daytime highs rarely exceed 90 °F (32 °C), and winter lows seldom drop below 30 °F (−1 °C).
Q5: How does Antioch’s rainfall compare to its neighboring cities?
A5: Antioch receives less annual rainfall than inland San Joaquin Valley towns but more than coastal cities like Oakland or San Francisco.
Resources
- National Oceanic and Atmospheric Administration (NOAA) Weather & Climate
- California Department of Water Resources – Climate Data
- Visit Antioch: Tourism & Events
- Weather Underground – Antioch Historical Weather
- San Joaquin Valley Climate Summary
For the most up‑to‑date weather information and local forecasts, always check your preferred weather service or official city resources.
