Upland weather by month
What a typical year looks like in Upland, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Chino Airport, 16 km from Upland; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 10 in253 mm
- Snow a year
- Rare
- Last spring freeze
- Feb 16
- First fall freeze
- Dec 7
- Heating degree days
- 1,387
- Cooling degree days
- 1,819
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 30°−1° (heating, 99%) and 106°41° (cooling, 1%).
Month by month
Upland in January
Highs average 70°21° and lows 42°5°, with 2.2 in55 mm of precipitation in a typical January.
- Record high
- 93°34° (2021)
- Record low
- 20°−7° (2007)
- Heating degree days
- 295
- Cooling degree days
- 4
Upland in February
Highs average 70°21° and lows 43°6°, with 2.7 in68 mm of precipitation in a typical February.
- Record high
- 95°35° (2016)
- Record low
- 27°−3° (2002)
- Heating degree days
- 247
- Cooling degree days
- 5
Upland in March
Highs average 73°23° and lows 46°8°, with 1.4 in36 mm of precipitation in a typical March.
- Record high
- 100°38° (2026)
- Record low
- 28°−2° (2002)
- Heating degree days
- 195
- Cooling degree days
- 14
Upland in April
Highs average 77°25° and lows 49°9°, with 0.55 in14 mm of precipitation in a typical April.
- Record high
- 106°41° (2004)
- Record low
- 31°−1° (1999)
- Heating degree days
- 107
- Cooling degree days
- 43
Upland in May
Highs average 81°27° and lows 54°12°, with 0.17 in4.3 mm of precipitation in a typical May.
- Record high
- 104°40° (2014)
- Record low
- 39°4° (2003)
- Heating degree days
- 30
- Cooling degree days
- 114
Upland in June
Highs average 88°31° and lows 59°15°, with 0.02 in0.5 mm of precipitation in a typical June.
- Record high
- 115°46° (2016)
- Record low
- 45°7° (1999)
- Heating degree days
- 2
- Cooling degree days
- 244
Upland in July
Highs average 94°34° and lows 63°17°, with 0.08 in2 mm of precipitation in a typical July.
- Record high
- 120°49° (2018)
- Record low
- 50°10° (2000)
- Heating degree days
- 0
- Cooling degree days
- 412
Upland in August
Highs average 96°36° and lows 63°17°, with 0.01 in0.3 mm of precipitation in a typical August.
- Record high
- 115°46° (2017)
- Record low
- 51°11° (1999)
- Heating degree days
- 0
- Cooling degree days
- 457
Upland in September
Highs average 93°34° and lows 60°16°, with 0.06 in1.5 mm of precipitation in a typical September.
- Record high
- 121°49° (2020)
- Record low
- 47°8° (1999)
- Heating degree days
- 1
- Cooling degree days
- 348
Upland in OctoberThis month
Highs average 85°29° and lows 53°12°, with 0.53 in13 mm of precipitation in a typical October.
- Record high
- 111°44° (2020)
- Record low
- 33°1° (2009)
- Heating degree days
- 28
- Cooling degree days
- 149
Upland in November
Highs average 76°25° and lows 45°7°, with 0.59 in15 mm of precipitation in a typical November.
- Record high
- 100°38° (2010)
- Record low
- 27°−3° (2000)
- Heating degree days
- 157
- Cooling degree days
- 28
Upland in December
Highs average 69°20° and lows 40°5°, with 1.7 in43 mm of precipitation in a typical December.
- Record high
- 92°33° (2021)
- Record low
- 23°−5° (1998)
- Heating degree days
- 325
- Cooling degree days
- 1