Current Conditions
48°F
Feels like 48°F
Mostly Sunny
As of Nov 12, 2026, 6:45 AM · Last checked Nov 12, 2026, 7:08 AM
Times shown in America/Los_Angeles. Some values may come from forecast models.
2 mph
SE · Gusts 11 mph
86%
9.8 mi
29.88 inHg
0.0
Low
San Jose reports mostly sunny as of Nov 12, 2026, 6:45 AM with temperatures near 48°F (9°C). Humidity is 86%, and winds are around 2 mph.
Check the forecast times and official local alerts before planning commuting, outdoor activities, or travel in San Jose.
San Jose has a warm Mediterranean climate sheltered by the Santa Cruz Mountains. At the San Jose station, the 1991-2020 reference averages range from a daily high of 59°F (15°C) in Dec to 83°F (28°C) in Aug. Monthly precipitation averages sum to 16.1 inches (410 mm) per year.
Winter is mild and delivers nearly all of the year's rain in bursts between dry spells. Spring warms quickly, with green hills fading to gold by May. Summers are dry, sunny, and noticeably warmer than San Francisco, the valley escapes most of the coastal fog, though marine air still cools the evenings. Fall stays warm and dry into October, which is also the peak of wildfire and smoke season in the surrounding hills.
The Santa Cruz Mountains enhance precipitation on their windward slopes and help shelter San Jose. Rainfall varies substantially between the valley and mountain ridges.
Local Planning Guide
Winter atmospheric rivers, summer heat waves, and the September-October peak of fire and smoke season are San Jose's key windows for forecast attention.
Radar often shows heavy rain stacked against the Santa Cruz Mountains while downtown stays nearly dry, so understanding the local rain shadow matters more here than raw storm totals.
Climate reference averages (1991-2020). Average daily high, average daily low, and monthly precipitation.
| Month | Avg High | Avg Low | Precipitation |
|---|---|---|---|
| Jan | 59°F | 43.3°F | 3.0 in |
| Feb | 62.8°F | 45.4°F | 3.2 in |
| Mar | 66.4°F | 47.6°F | 2.6 in |
| Apr | 70°F | 49.8°F | 1.2 in |
| May | 74.9°F | 53.3°F | 0.5 in |
| Jun | 80.1°F | 57°F | 0.2 in |
| Jul | 82.2°F | 59.1°F | 0.0 in |
| Aug | 82.7°F | 59.8°F | 0.0 in |
| Sep | 81.4°F | 58.2°F | 0.1 in |
| Oct | 74.6°F | 53.8°F | 0.8 in |
| Nov | 65°F | 47.2°F | 1.4 in |
| Dec | 58.8°F | 42.8°F | 3.1 in |
Climate data and sources. Verified against NOAA NCEI: SAN JOSE, CA US (PDF) (USC00047821), 1991-2020. Values are rounded for display. Raw data (JSON). Climate averages are not a forecast and do not describe every neighborhood.
These guides, tools, and feature pages help you interpret the conditions on this page and plan around what happens next.
Feature
Follow active wildfires, smoke forecasts, and fire weather conditions.
Guide
What the probability of precipitation measures, why hourly and daily chances differ, and what the number leaves out.
Guide
The key differences between winter precipitation types, how each forms, and how to stay safe.
Glossary
The amount of water vapor present in the air.
Explore local pages built around radar, alerts, air quality, and app-download search intent for this city.
Local Weather App
Compare what a weather app should handle in San Jose: local forecasts, radar, alerts, air quality, and planning tools from WeatherAI.
Local Weather Radar
How to read San Jose weather radar: storm motion, precipitation type, and what to check before rain reaches your neighborhood.
Local Storm Tracker
Track storms near San Jose with radar loops, storm movement, local alerts, saved places, and WeatherAI storm tracking features for iPhone, iPad, Mac, and Vision Pro.
Local Alerts
Get local weather alert guidance for San Jose, including severe weather, wind, rain, heat, and daily planning notifications in WeatherAI.
Air Quality
Plan around San Jose air quality with weather context, outdoor planning guidance, and WeatherAI air quality monitoring for iPhone, iPad, Mac, and Vision Pro.