Two-week planning outlook

14-Day Weather Forecast for Fontana, California

Daily high and low temperatures, rain chances, wind, UV index, weekend conditions, and planning guidance for the next two weeks.

Expect daytime highs between 77°F and 103°F during the next 14 days. Rain chances peak at 100% on Sunday, Sep 6, while Sat, Sep 12 · Sun, Sep 13 · Mon, Sep 14 currently look most favorable for outdoor plans.

Updated Sep 6, 8:13 AM -07:00

14 Days at a Glance

Complete two-week outlook

Warmest DayWed, Sep 9 · 103°FBroken Clouds

Coolest NightSun, Sep 6 · 69°FHeavy Intensity Rain

Highest Rain ChanceSun, Sep 6 · 100%Heavy Intensity Rain

Strongest WindSat, Sep 12 · 10.1 mphNo gust data

Weekend OutlookRain possible · Heavy Intensity Rain77°F / 69°F

Total Precipitation1.05 inEstimated across 14 days

Extended local outlook

14-Day Forecast

Detailed 48-hour forecast

Sunday, Sep 6 · 77°F / 69°F

Heavy Intensity Rain

Rain chance 100%, 4 mph E, humidity 85%.

Morning: 76°F
Afternoon: 71°F
Evening: 75°F
Overnight: 77°F
Humidity: 85%
Pressure: 30.00 inHg
Dew point: —
UV index: 0 low
Sunrise: 6:26 AM
Sunset: 7:09 PM

Temperature Trend

HighLow69°F – 103°F

9/69/79/89/99/109/119/129/139/149/159/169/179/189/19

Rain Chances

100%9/6

2%9/7

0%9/8

0%9/9

0%9/10

0%9/11

0%9/12

0%9/13

0%9/14

5%9/15

59%9/16

52%9/17

35%9/18

39%9/19

UV Index

Daily peak

09/6

09/7

09/8

09/9

09/10

09/11

09/12

09/13

09/14

09/15

09/16

09/17

09/18

09/19

Planning Ahead

Forecast-based guidance

Most Favorable Outdoor Days

Sat, Sep 12 · Sun, Sep 13 · Mon, Sep 14

Lower rain chances and manageable winds

Rainy Days

Sun, Sep 6 · Wed, Sep 16 · Thu, Sep 17

Peak chance 100%

Warmest Days

Wed, Sep 9 · Thu, Sep 10 · Tue, Sep 8

Highs up to 103°F

Coolest Nights

Sun, Sep 6 · Sun, Sep 13 · Mon, Sep 7

Lows near 69°F

Windiest Day

Saturday, Sep 12

10.1 mph · Gusts —

Weekend Weather

Two-week planning

This Weekend

Sun, Sep 677°F / 69°FHeavy Intensity Rain · Rain 100%

Next Weekend

Sat, Sep 1289°F / 74°FClear Sky · Rain 0%

Sun, Sep 1392°F / 71°FClear Sky · Rain 0%

14-Day Weather Forecast for Fontana, California

Temperatures range from an overnight low near 69°F to a daytime high near 103°F. The strongest rain signal is 100% on Sunday, Sep 6, with 3 notable wet days in the current outlook.

FAQ

14-day forecast questions for Fontana

What is the 14-day weather forecast for Fontana?

Will it rain in Fontana during the next two weeks?

The strongest rain signal is 100% on Sunday, Sep 6, with 3 notable wet days in the current outlook.

What is the hottest day in Fontana during the next 14 days?

The warmest forecast day is Wednesday, Sep 9, with a high near 103°F.

What is the coldest night in Fontana?

The lowest forecast temperature is 69°F on Sunday, Sep 6.

What will the weather be this weekend in Fontana?

This Weekend currently ranges from 69°F to 77°F, with rain chances peaking at 100%.