Fontana, California weather
United States · America/Los_Angeles · 34.09, -117.44
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Fontana, CA Weather Today
Current conditions, hourly and 7 day forecast, official severe weather alerts, and air quality for Fontana, California. Every section shows where the data came from and when it was last checked.
Your briefing
Fontana, California
- Right now
- No official warning for this location. 73° and clear sky.Observed
- Next few hours
- No rain in the forecast for the next few hours.Forecast
- Your day
- Best outdoor window: 12 PM to 5 PM.Our reading
- UV index 6 — sunburn risk during the strongest sun.Observed
Official warnings for this location come from NOAA / National Weather Service. Lines marked Our reading are WeatherSignal’s reading of the measurements and forecast, not an official statement.
Fontana, California
73°
Clear sky
Feels like 73° · High 90° · Low 72°
Clear sky here right now. Nothing falling.
Mild and clear early this morning. 73° right now. Today's high is 90°.
- Sunrise 11:00 PM
- Today's high 90°
- Rain next 6 hrs 0%
Next few hours
Now
73°
—
5 AM
73°
—
6 AM
72°
—
7 AM
72°
—
8 AM
73°
—
- Rain chance
- 0%
- Wind
- 18 mph N
- Humidity
- 31%
- Air quality
- No reading
Source updated: 12:02:53 PM · WeatherSignal checked: 12:02:53 PM
What matters today
Six quick answers for Fontana. Tap Why? on any of them to see the reasoning.
Umbrella
Nah (Good)
Best time
6 AM (Good)
Dog walk
6 AM (Good)
Car wash
Go for it (Good)
Cookout
Green light (Good)
Windows
Roll 'em down (Good)
Today's Signal
Mixed day
56/100
A mixed day: the wind and poor visibility will get in the way of outdoor plans.
Wind 18 mph · Visibility 0.0 mi · Active High Wind Warning
Today is about 10° warmer than the rest of the week.
See exactly how this number was worked out
Every location starts at 100. Points come off for heat, cold, rain, wind, UV, humidity, poor visibility, and any official alert. Nothing is ever added back.
- Starting score100
- Wind 18 mph-4
- Visibility 0.0 mi-10
- Active High Wind Warning-30
- Final Signal56
Next 12 hours
Steady conditions, but the temperature swings about 18° across the next 12 hours.
- 7 AMCoolest stretch · 72°
- 11 AMSunset
- 3 PMWarmest stretch · 90°
- 5 AM—73 degrees, 0 percent chance of rain
- 6 AM—72 degrees, 0 percent chance of rain
- 7 AM—72 degrees, 0 percent chance of rain
- 8 AM—73 degrees, 0 percent chance of rain
- 9 AM—76 degrees, 0 percent chance of rain
- 10 AM—80 degrees, 0 percent chance of rain
- 11 AM—82 degrees, 0 percent chance of rain
- 12 PM—85 degrees, 0 percent chance of rain
- 1 PM—87 degrees, 0 percent chance of rain
- 2 PM—89 degrees, 0 percent chance of rain
- 3 PM—90 degrees, 0 percent chance of rain
- 4 PM—89 degrees, 0 percent chance of rain
The line is temperature by hour. The number under each hour is the chance of rain. Scroll sideways for the full 12 hours.
Next change
It warms up through the next several hours
Temperatures climb from about 73° to 89°, topping out near 90°. There is no meaningful rain signal in the next several hours.
WeatherSignal NOW: Fontana, California
One number for everything happening around you, from 0 to 100.
82
WATCHFUL
Severe weather is what is pulling this number down: official advisory in effect.
Tap any line to see exactly what added or subtracted points. Every rule is published on our methodology page. This is an informational signal, not a safety rating: official warnings always come first.
What this means
Generated from the forecast values above using fixed rules: not an AI guess.
- A High Wind Warning issued by NWS San Diego CA is active for San Bernardino and Riverside County Valleys-The Inland Empire.
- No significant precipitation is expected in the next 24 hours.
Next 24 hours
Will it rain during your commute? When does the storm arrive?
See all 48 hours (2 days) — free
| Time | Condition | Temp | Feels | Precip % | Amount | Wind | Humidity |
|---|---|---|---|---|---|---|---|
| 5 AM | Clear sky | 73° | 73° | 0% | 0.00″ | 18 N | 31% |
| 6 AM | Clear sky | 72° | 72° | 0% | 0.00″ | 18 N | 32% |
| 7 AM | Clear sky | 72° | 72° | 0% | 0.00″ | 18 N | 32% |
| 8 AM | Clear sky | 73° | 73° | 0% | 0.00″ | 17 N | 30% |
| 9 AM | Clear sky | 76° | 76° | 0% | 0.00″ | 18 N | 27% |
| 10 AM | Clear sky | 80° | 80° | 0% | 0.00″ | 17 N | 24% |
| 11 AM | Clear sky | 82° | 82° | 0% | 0.00″ | 17 N | 22% |
| 12 PM | Mainly clear | 85° | 85° | 0% | 0.00″ | 17 N | 21% |
| 1 PM | Mainly clear | 87° | 87° | 0% | 0.00″ | 16 N | 20% |
| 2 PM | Clear sky | 89° | 89° | 0% | 0.00″ | 15 N | 19% |
| 3 PM | Mainly clear | 90° | 90° | 0% | 0.00″ | 14 N | 19% |
| 4 PM | Mainly clear | 89° | 89° | 0% | 0.00″ | 15 N | 19% |
| 5 PM | Clear sky | 86° | 86° | 0% | 0.00″ | 15 N | 22% |
| 6 PM | Clear sky | 83° | 83° | 0% | 0.00″ | 14 N | 25% |
| 7 PM | Clear sky | 80° | 80° | 0% | 0.00″ | 13 N | 27% |
| 8 PM | Clear sky | 79° | 79° | 0% | 0.00″ | 13 N | 29% |
| 9 PM | Clear sky | 78° | 78° | 0% | 0.00″ | 14 NNE | 30% |
| 10 PM | Clear sky | 77° | 77° | 0% | 0.00″ | 13 NNE | 30% |
| 11 PM | Clear sky | 76° | 76° | 0% | 0.00″ | 12 NNE | 30% |
| 12 AM | Clear sky | 75° | 75° | 0% | 0.00″ | 11 NNE | 30% |
| 1 AM | Clear sky | 73° | 73° | 0% | 0.00″ | 11 NNE | 31% |
| 2 AM | Clear sky | 72° | 72° | 0% | 0.00″ | 11 NNE | 33% |
| 3 AM | Clear sky | 71° | 71° | 0% | 0.00″ | 11 NNE | 33% |
| 4 AM | Clear sky | 69° | 69° | 0% | 0.00″ | 11 NNE | 35% |
7-day forecast
Confidence decreases the further out you look.
Today
Clear sky
90° / 72°
- Precip:
- 0% · 0.00″
- Wind:
- 18 mph
- UV:
- 6.0
- Sun:
- 11 PM to 11 AM
Sat, Oct 17
Clear sky
88° / 66°
- Precip:
- 0% · 0.00″
- Wind:
- 15 mph
- UV:
- 6.1
- Sun:
- 11 PM to 11 AM
Sun, Oct 18
Clear sky
87° / 63°
- Precip:
- 0% · 0.00″
- Wind:
- 9 mph
- UV:
- 6.3
- Sun:
- 11 PM to 11 AM
Mon, Oct 19
Clear sky
86° / 66°
- Precip:
- 0% · 0.00″
- Wind:
- 4 mph
- UV:
- 0.4
- Sun:
- 11 PM to 11 AM
Tue, Oct 20
Clear sky
82° / 62°
- Precip:
- 0% · 0.00″
- Wind:
- 9 mph
- UV:
- 0.0
- Sun:
- 11 PM to 11 AM
Lower confidence: long-range outlook, not a certainty.
Wed, Oct 21
Clear sky
70° / 58°
- Precip:
- 0% · 0.00″
- Wind:
- 11 mph
- UV:
- 0.0
- Sun:
- 11 PM to 11 AM
Lower confidence: long-range outlook, not a certainty.
Thu, Oct 22
Clear sky
64° / 54°
- Precip:
- 0% · 0.00″
- Wind:
- 4 mph
- UV:
- 0.0
- Sun:
- 11 PM to 11 AM
Lower confidence: long-range outlook, not a certainty.
Forecasts describe likely conditions, not guaranteed outcomes. Official warnings from your national weather service always take precedence over anything shown here.
Fontana hourly weather
Hour by hour, out to eight days ahead.
Fontana 7 day forecast
Highs, lows and rain chance for the week.
Air quality detail
Pollutants, category, and official guidance.