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Official · NWS

Heat Advisory

until 5:00 am

Heat Advisory issued October 3 at 2:02AM PDT until October 5 at 10:00PM PDT by NWS San Francisco CA

Full text

* WHAT...Hot conditions with maximum temperatures in the mid-90s to low-100s. Mild minimum temperatures and weak onshore flow will limit overnight relief. * WHERE...The East Bay and San Francisco Bay Shoreline, North Bay Interior Mountains and Valleys, The Santa Clara Valley and Eastern Hills, The Santa Cruz Mountains, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...From 11 AM this morning to 10 PM PDT Monday. * IMPACTS...This level of heat affects anyone without effective cooling and/or adequate hydration. Impacts likely in some health systems, heat-sensitive industries and infrastructure.

Hydration is a critical piece to surviving the heat. Drink water, and if possible, take water to those who are vulnerable. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to the early morning or evening. Take action when you experience symptoms of heat exhaustion and/or heat stroke. Beat the heat and check the backseat! Do not leave young children or pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.

Sonoma Coastal Range; North Bay Interior Mountains; North Bay Interior Valleys; San Francisco Bay Shoreline; East Bay Interior Valleys; Santa Cruz Mountains; Santa Clara Valley Including San Jose; Eastern Santa Clara Hills; East Bay Hills; Southern Salinas Valley/Arroyo Seco and Lake San Antonio; Santa Lucia Mountains and Los Padres National Forest; Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park

Computed

Heat advisory

Sat

Feels-like high near 33°C.

Computed

Heat advisory

Sun

Feels-like high near 33°C.

Computed

Heat advisory

Mon

Feels-like high near 32°C.

San Jose 10-Day Forecast

California 3:59 am local updated now

Clear sky

64°

Clear sky

Feels like 64°

94° 64° today's high / low

+14.6° vs normal — much warmer than normal

100

Perfect

Outdoor comfort right now

It is 64°F and clear sky in San Jose. Nothing wet on the radar for the next 24 hours. Tomorrow: partly cloudy, high 93°F.

  • Pressure steady slowly 29.86 inHg
  • Wind 4 mph SW
  • Humidity 76%
  • Cloud 0%
  • UV peak 8
  • Rain chance 0%

Next 14 days

Pick a day to load its hour-by-hour detail.

14-day forecast for San Jose

Daily highs and lows, precipitation, wind, UV and daylight.

Extended daily forecast for San Jose
Day Conditions High Low Chance Rain Snow Wind UV Sunrise Sunset
Today Oct 3 Clear sky Clear sky 94° 64° 0% — — 8 mph 8 7:04 am 6:47 pm
Tomorrow Oct 4 Partly cloudy Partly cloudy 93° 69° 1% — — 8 mph 7 7:05 am 6:46 pm
Monday Oct 5 Clear sky Clear sky 92° 69° 0% — — 7 mph 7 7:06 am 6:44 pm
Tuesday Oct 6 Clear sky Clear sky 92° 69° 0% — — 9 mph 7 7:07 am 6:43 pm
Wednesday Oct 7 Clear sky Clear sky 91° 70° 0% — — 8 mph 7 7:08 am 6:41 pm
Thursday Oct 8 Clear sky Clear sky 88° 68° 1% — — 7 mph 7 7:09 am 6:40 pm
Friday Oct 9 Partly cloudy Partly cloudy 76° 58° 3% — — 7 mph 5 7:10 am 6:38 pm
Saturday Oct 10 Partly cloudy Partly cloudy 70° 54° 4% — — 7 mph 7 7:11 am 6:37 pm
Sunday Oct 11 Partly cloudy Partly cloudy 68° 52° 7% — — 8 mph 7 7:12 am 6:35 pm
Monday Oct 12 Partly cloudy Partly cloudy 72° 55° 7% — — 6 mph 7 7:12 am 6:34 pm
Tuesday Oct 13 Partly cloudy Partly cloudy 71° 56° 3% — — 7 mph 7 7:13 am 6:33 pm
Wednesday Oct 14 Partly cloudy Partly cloudy 74° 55° 3% — — 5 mph 6 7:14 am 6:31 pm
Thursday Oct 15 Clear sky Clear sky 74° 55° 0% — — 5 mph 6 7:15 am 6:30 pm
Friday Oct 16 Clear sky Clear sky 78° 57° 3% — — 6 mph 6 7:16 am 6:28 pm

About this San Jose forecast

Updated 2026-10-03 10:58 UTC, and refreshed automatically every few minutes. Forecast data is provided by Visual Crossing; radar frames from RainViewer; the 20-year normals and records from the ERA5 reanalysis archive. No national weather service publishes point alerts here, so only computed watches are shown.

Watches labelled computed are worked out on this site from forecast thresholds and are not official warnings — always defer to your national weather service. Need help reading a number? See the sourced weather guide.

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