Monthly outlook for Fontana, CA: average high 70.6°, average low 58.3°. That is 1° below the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 2 days and 0.7 inches. The warmest day looks like 7 November (78.4°), the coolest 2 November (49.5°).
70.6°/58.3°
Average high / low
−1°
Below normal
4 / 2
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
30 October – 8 November
71.1°
73.6°
-1.4°
9 November – 18 November
69.8°
69.7°
+0.1°
19 November – 28 November
at normal
66.7°
—
October records over 66 years
103.8°2 October 2024All-time high
31.5°30 October 1971All-time low
Sat, 3167° / 55°0.29
67 °
Fontana, Saturday, 31 October
Rain. High 67°, low 55°.
Pressure29.97 inHg
Wind1.1 mph NE
Humidity56%
Visibility6.2 mi
Dew point47°
Sun, 0164° / 53°0.52
64 °
Fontana, Sunday, 1 November
Rain. High 64°, low 53°.
Pressure29.91 inHg
Wind4.8 mph SW
Humidity71%
Visibility5.0 mi
Dew point53°
Mon, 0272° / 50°0
72 °
Fontana, Monday, 2 November
Clear. High 72°, low 50°.
Pressure30.09 inHg
Wind2.9 mph NE
Humidity34%
Visibility6.2 mi
Dew point40°
Tue, 0375° / 55°0
75 °
Fontana, Tuesday, 3 November
Clear. High 75°, low 55°.
Pressure30.09 inHg
Wind6.2 mph N
Humidity34%
Visibility—
Dew point40°
Wed, 0467° / 57°0
67 °
Fontana, Wednesday, 4 November
Clear. High 67°, low 57°.
Pressure29.97 inHg
Wind3.9 mph SW
Humidity40%
Visibility—
Dew point39°
Thu, 0569° / 57°0.02
69 °
Fontana, Thursday, 5 November
Light rain. High 69°, low 57°.
Pressure29.83 inHg
Wind7.2 mph SW
Humidity63%
Visibility—
Dew point51°
Fri, 0673° / 60°0
73 °
Fontana, Friday, 6 November
Clear. High 73°, low 60°.
Pressure29.83 inHg
Wind6.5 mph W
Humidity48%
Visibility—
Dew point47°
Sat, 0778° / 64°0
78 °
Fontana, Saturday, 7 November
Clear. High 78°, low 64°.
Pressure29.91 inHg
Wind4.9 mph NW
Humidity26%
Visibility—
Dew point35°
Sun, 0878° / 65°0
78 °
Fontana, Sunday, 8 November
Partly cloudy. High 78°, low 65°.
Pressure30.00 inHg
Wind6.4 mph W
Humidity11%
Visibility—
Dew point15°
Mon, 0971° / 64°0
71 °
Fontana, Monday, 9 November
Overcast. High 71°, low 64°.
Pressure30.06 inHg
Wind7.2 mph W
Humidity42%
Visibility—
Dew point44°
Tue, 1070° / 61°0
70 °
Fontana, Tuesday, 10 November
Clear. High 70°, low 61°.
Pressure30.06 inHg
Wind8.4 mph W
Humidity55%
Visibility—
Dew point49°
Wed, 1162° / 58°0.35
62 °
Fontana, Wednesday, 11 November
Rain. High 62°, low 58°.
Pressure29.97 inHg
Wind15.5 mph SW
Humidity78%
Visibility—
Dew point55°
Thu, 1268° / 55°0
68 °
Fontana, Thursday, 12 November
Mostly clear. High 68°, low 55°.
Pressure29.97 inHg
Wind7.4 mph NE
Humidity47%
Visibility—
Dew point41°
Fri, 1373° / 58°0
73 °
Fontana, Friday, 13 November
Clear. High 73°, low 58°.
Pressure30.09 inHg
Wind5.2 mph NE
Humidity21%
Visibility—
Dew point25°
Sat, 1474° / 61°0
74 °
Fontana, Saturday, 14 November
Partly cloudy. High 74°, low 61°.
Pressure30.09 inHg
Wind7.2 mph SW
Humidity15%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 1570° / 47°0.07
70 °
Fontana, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high70°
Average low47°
Average precipitation0.07 in
Chance of precipitation12%
Record high85° (2021)
Record low31° (1964)
Mon, 1669° / 48°0.06
69 °
Fontana, Monday, 16 November
Climate normal for this date — 60-year average.
Average high69°
Average low48°
Average precipitation0.06 in
Chance of precipitation17%
Record high85° (2008)
Record low32° (2000)
Tue, 1768° / 48°0.04
68 °
Fontana, Tuesday, 17 November
Climate normal for this date — 60-year average.
Average high68°
Average low48°
Average precipitation0.04 in
Chance of precipitation15%
Record high87° (2019)
Record low35° (2000)
Wed, 1868° / 47°0.08
68 °
Fontana, Wednesday, 18 November
Climate normal for this date — 60-year average.
Average high68°
Average low47°
Average precipitation0.08 in
Chance of precipitation22%
Record high86° (2019)
Record low31° (1964)
Thu, 1969° / 46°0.06
69 °
Fontana, Thursday, 19 November
Climate normal for this date — 60-year average.
Average high69°
Average low46°
Average precipitation0.06 in
Chance of precipitation10%
Record high85° (2006)
Record low24° (1964)
Fri, 2068° / 46°0.08
68 °
Fontana, Friday, 20 November
Climate normal for this date — 60-year average.
Average high68°
Average low46°
Average precipitation0.08 in
Chance of precipitation13%
Record high84° (2006)
Record low30° (1964)
Sat, 2167° / 47°0.11
67 °
Fontana, Saturday, 21 November
Climate normal for this date — 60-year average.
Average high67°
Average low47°
Average precipitation0.11 in
Chance of precipitation25%
Record high89° (2017)
Record low32° (1979)
Sun, 2267° / 46°0.06
67 °
Fontana, Sunday, 22 November
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.06 in
Chance of precipitation15%
Record high90° (2017)
Record low33° (1979)
Mon, 2367° / 46°0.01
67 °
Fontana, Monday, 23 November
Climate normal for this date — 60-year average.
Average high67°
Average low46°
Average precipitation0.01 in
Chance of precipitation8%
Record high89° (2017)
Record low35° (2003)
Tue, 2467° / 45°0.04
67 °
Fontana, Tuesday, 24 November
Climate normal for this date — 60-year average.
Average high67°
Average low45°
Average precipitation0.04 in
Chance of precipitation15%
Record high85° (2017)
Record low34° (2003)
Wed, 2567° / 45°0.07
67 °
Fontana, Wednesday, 25 November
Climate normal for this date — 60-year average.
Average high67°
Average low45°
Average precipitation0.07 in
Chance of precipitation13%
Record high86° (1977)
Record low33° (1973)
Thu, 2666° / 45°0.08
66 °
Fontana, Thursday, 26 November
Climate normal for this date — 60-year average.
Average high66°
Average low45°
Average precipitation0.08 in
Chance of precipitation18%
Record high86° (1977)
Record low31° (2010)
Fri, 2765° / 44°0.05
65 °
Fontana, Friday, 27 November
Climate normal for this date — 60-year average.
Average high65°
Average low44°
Average precipitation0.05 in
Chance of precipitation17%
Record high85° (2014)
Record low32° (1994)
Sat, 2864° / 43°0.11
64 °
Fontana, Saturday, 28 November
Climate normal for this date — 60-year average.
Average high64°
Average low43°
Average precipitation0.11 in
Chance of precipitation18%
Record high83° (1980)
Record low32° (1976)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Fontana, CA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Fontana, CA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.