Lytle Creek weather by month
What a typical year looks like in Lytle Creek, California: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Ontario International Airport, 23 km from Lytle Creek; records cover 1998–2026.
The year at a glance
- Precipitation a year
- 11.6 in296 mm
- Snow a year
- Rare
- Last spring freeze
- Feb 2
- First fall freeze
- Dec 10
- Heating degree days
- 1,292
- Cooling degree days
- 1,969
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 34°1° (heating, 99%) and 105°41° (cooling, 1%).
Month by month
Lytle Creek in January
Highs average 68°20° and lows 45°7°, with 2.6 in65 mm of precipitation in a typical January.
- Record high
- 90°32° (2003)
- Record low
- 25°−4° (2007)
- Heating degree days
- 280
- Cooling degree days
- 5
Lytle Creek in February
Highs average 68°20° and lows 46°8°, with 3.1 in78 mm of precipitation in a typical February.
- Record high
- 91°33° (2026)
- Record low
- 29°−2° (2018)
- Heating degree days
- 228
- Cooling degree days
- 8
Lytle Creek in March
Highs average 72°22° and lows 49°9°, with 1.6 in42 mm of precipitation in a typical March.
- Record high
- 100°38° (2026)
- Record low
- 33°1° (2006)
- Heating degree days
- 172
- Cooling degree days
- 23
Lytle Creek in April
Highs average 76°24° and lows 51°11°, with 0.76 in19 mm of precipitation in a typical April.
- Record high
- 101°38° (2004)
- Record low
- 33°1° (1999)
- Heating degree days
- 105
- Cooling degree days
- 57
Lytle Creek in May
Highs average 80°27° and lows 56°13°, with 0.3 in7.6 mm of precipitation in a typical May.
- Record high
- 103°39° (2003)
- Record low
- 42°6° (1999)
- Heating degree days
- 37
- Cooling degree days
- 121
Lytle Creek in June
Highs average 86°30° and lows 60°16°, with 0.02 in0.5 mm of precipitation in a typical June.
- Record high
- 112°44° (2016)
- Record low
- 46°8° (1999)
- Heating degree days
- 4
- Cooling degree days
- 250
Lytle Creek in July
Highs average 94°34° and lows 65°18°, with 0.05 in1.3 mm of precipitation in a typical July.
- Record high
- 117°47° (2018)
- Record low
- 56°13° (2001)
- Heating degree days
- 0
- Cooling degree days
- 442
Lytle Creek in August
Highs average 95°35° and lows 65°18°, with 0.03 in0.8 mm of precipitation in a typical August.
- Record high
- 112°44° (2017)
- Record low
- 56°13° (1999)
- Heating degree days
- 0
- Cooling degree days
- 467
Lytle Creek in September
Highs average 91°33° and lows 64°18°, with 0.1 in2.5 mm of precipitation in a typical September.
- Record high
- 118°48° (2020)
- Record low
- 51°11° (2013)
- Heating degree days
- 1
- Cooling degree days
- 378
Lytle Creek in OctoberThis month
Highs average 83°28° and lows 57°14°, with 0.41 in10 mm of precipitation in a typical October.
- Record high
- 107°42° (2012)
- Record low
- 41°5° (2019)
- Heating degree days
- 26
- Cooling degree days
- 176
Lytle Creek in November
Highs average 75°24° and lows 49°9°, with 0.8 in20 mm of precipitation in a typical November.
- Record high
- 98°37° (2010)
- Record low
- 32°0° (2004)
- Heating degree days
- 135
- Cooling degree days
- 40
Lytle Creek in December
Highs average 67°19° and lows 44°6°, with 1.9 in48 mm of precipitation in a typical December.
- Record high
- 87°31° (2021)
- Record low
- 28°−2° (1998)
- Heating degree days
- 304
- Cooling degree days
- 2