Fontana, CA Weather Forecast
Right now it is 69°F and clear in Fontana (as of Fri, 12:00 AM PST). Friday: high near 78°F. Tomorrow: sunny, high near 81°F. Official NWS forecast and alerts, refreshed every 30 minutes.
Current conditions
Measured at Fontana-Arrow Highway (3 mi from the city center).
Weather tomorrow in Fontana
Sunny81°FSunny, with a high near 81. North wind 15 to 20 mph, with gusts as high as 35 mph.
Clear58°FClear, with a low around 58. North wind 10 to 15 mph, with gusts as high as 25 mph.
Weather alerts
No active National Weather Service watches, warnings or advisories for Fontana right now.
7-day forecast
Clear58°FOvernight: Clear, with a low around 58. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny78°F / 59°FSunny, with a high near 78. North wind 10 to 20 mph, with gusts as high as 30 mph. Friday Night: Mostly clear, with a low around 59. North wind 5 to 20 mph, with gusts as high as 35 mph.
Sunny81°F / 58°FSunny, with a high near 81. North wind 15 to 20 mph, with gusts as high as 35 mph. Saturday Night: Clear, with a low around 58. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny83°F / 59°FSunny, with a high near 83. Sunday Night: Mostly clear, with a low around 59.
Sunny82°F / 58°FSunny, with a high near 82. Monday Night: Mostly clear, with a low around 58.
Sunny81°F / 58°FSunny, with a high near 81. Tuesday Night: Clear, with a low around 58.
Sunny81°F / 57°FSunny, with a high near 81. Wednesday Night: Mostly clear, with a low around 57.
Sunny
11% chance of rain/snow77°FSunny, with a high near 77.
Forecast issued by NWS forecast office SGX · updated Nov 6, 1:12 AM PST. Daytime highs and overnight lows are on the right.
Hourly forecast, radar & more on weather.gov
Nearby cities
Fontana population: 221,223 (U.S. Census Bureau, July 1, 2025 estimate). More California cities · All US cities
Source: National Weather Service / NOAA (public domain), fetched live. Tachlis is not affiliated with the NWS.
Questions & answers
What is the weather tomorrow in Fontana?
Saturday, November 7: Sunny, high near 81°F; night: clear, low around 58°F.
Where does the Fontana forecast come from?
From the National Weather Service forecast office SGX, which writes the official forecast for Fontana's 2.5 km grid square. Current conditions come from the nearest NWS/FAA weather station.
How often is the Fontana weather updated?
This page fetches fresh data from the National Weather Service at most every 30 minutes, and checks for new watches and warnings every 5 minutes.
What time zone are the times shown in?
Local time for Fontana (America/Los Angeles).
Why can the current temperature differ from the forecast?
The current reading is a real measurement at a weather station, often at an airport, while the forecast describes the whole grid square around the city. Temperatures can differ by a few degrees across a city.