Grandfield weather by month
What a typical year looks like in Grandfield, Oklahoma: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Grandfield 3w Mesonet, 5 km from Grandfield; records cover 2007–2026.
The year at a glance
- Precipitation a year
- 0 in0 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 5
- First fall freeze
- Nov 5
- Heating degree days
- 3,103
- Cooling degree days
- 2,457
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 14°−10° (heating, 99%) and 108°42° (cooling, 1%).
Month by month
Grandfield in January
Highs average 53°12° and lows 29°−2°, with — of precipitation in a typical January.
- Record high
- 82°28° (2017)
- Record low
- 4°−16° (2017)
- Heating degree days
- 738
- Cooling degree days
- 0
Grandfield in February
Highs average 58°14° and lows 33°0°, with — of precipitation in a typical February.
- Record high
- 91°33° (2017)
- Record low
- −10°−23° (2021)
- Heating degree days
- 552
- Cooling degree days
- 2
Grandfield in March
Highs average 66°19° and lows 41°5°, with — of precipitation in a typical March.
- Record high
- 96°36° (2026)
- Record low
- 8°−13° (2014)
- Heating degree days
- 376
- Cooling degree days
- 13
Grandfield in April
Highs average 74°23° and lows 49°9°, with — of precipitation in a typical April.
- Record high
- 103°39° (2012)
- Record low
- 22°−6° (2009)
- Heating degree days
- 165
- Cooling degree days
- 56
Grandfield in May
Highs average 84°29° and lows 59°15°, with — of precipitation in a typical May.
- Record high
- 108°42° (2022)
- Record low
- 31°−1° (2013)
- Heating degree days
- 33
- Cooling degree days
- 238
Grandfield in June
Highs average 94°34° and lows 69°20°, with — of precipitation in a typical June.
- Record high
- 114°46° (2011)
- Record low
- 53°12° (2020)
- Heating degree days
- 0
- Cooling degree days
- 487
Grandfield in July
Highs average 98°36° and lows 73°23°, with — of precipitation in a typical July.
- Record high
- 114°46° (2022)
- Record low
- 56°13° (2013)
- Heating degree days
- 0
- Cooling degree days
- 623
Grandfield in August
Highs average 96°36° and lows 72°22°, with — of precipitation in a typical August.
- Record high
- 114°46° (2012)
- Record low
- 57°14° (2015)
- Heating degree days
- 0
- Cooling degree days
- 589
Grandfield in September
Highs average 89°31° and lows 64°18°, with — of precipitation in a typical September.
- Record high
- 111°44° (2023)
- Record low
- 42°6° (2020)
- Heating degree days
- 8
- Cooling degree days
- 341
Grandfield in OctoberThis month
Highs average 76°24° and lows 52°11°, with — of precipitation in a typical October.
- Record high
- 102°39° (2020)
- Record low
- 22°−6° (2019)
- Heating degree days
- 132
- Cooling degree days
- 100
Grandfield in November
Highs average 64°18° and lows 39°4°, with — of precipitation in a typical November.
- Record high
- 93°34° (2025)
- Record low
- 15°−9° (2014)
- Heating degree days
- 409
- Cooling degree days
- 8
Grandfield in December
Highs average 54°12° and lows 31°0°, with — of precipitation in a typical December.
- Record high
- 89°32° (2021)
- Record low
- 7°−14° (2013)
- Heating degree days
- 690
- Cooling degree days
- 0