Weather in Fontana in September
In an average September, Fontana sees a daily high around 87°F and a low around 63°F, based on 1980–2026 of local climate records.
| Average high | 87°F |
|---|---|
| Typical high range | 77°F to 97°F |
| Average low | 63°F |
| Typical low range | 57°F to 70°F |
| Average daily precipitation | 0.00 in |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
115°F
2020-09-06
Lowest
62°F
1986-09-24
Low
Highest
82°F
2022-09-04
Lowest
48°F
1982-09-30
Feels-like
Highest
133°F
2020-09-05
Lowest
46°F
1982-09-30
Humidity
Highest
18.4 g/m³
1998-09-05
Lowest
3.2 g/m³
2013-09-29
Wind
Highest
11 mph
2016-09-25
Lowest
3 mph
2022-09-10
Gust
Highest
32 mph
2016-09-25
Lowest
10 mph
2000-09-24
Precip
Wettest
1.97 in
2023
Driest
0.00 in
2020
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