Formoso weather by month
What a typical year looks like in Formoso, Kansas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lovewell Dam, 14 km from Formoso; records cover 1958–2026.
The year at a glance
- Precipitation a year
- 27.5 in698 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 19
- First fall freeze
- Oct 13
- Heating degree days
- 5,641
- Cooling degree days
- 1,191
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −2°−19° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Formoso in January
Highs average 38°3° and lows 17°−9°, with 0.64 in16 mm of precipitation in a typical January.
- Record high
- 79°26° (1990)
- Record low
- −22°−30° (1974)
- Heating degree days
- 1168
- Cooling degree days
- 0
Formoso in February
Highs average 42°6° and lows 20°−7°, with 0.75 in19 mm of precipitation in a typical February.
- Record high
- 80°27° (2024)
- Record low
- −21°−29° (1981)
- Heating degree days
- 955
- Cooling degree days
- 0
Formoso in March
Highs average 54°12° and lows 29°−1°, with 1.5 in38 mm of precipitation in a typical March.
- Record high
- 96°36° (2026)
- Record low
- −13°−25° (1978)
- Heating degree days
- 723
- Cooling degree days
- 0
Formoso in April
Highs average 64°18° and lows 39°4°, with 2.3 in59 mm of precipitation in a typical April.
- Record high
- 98°37° (1989)
- Record low
- 9°−13° (1975)
- Heating degree days
- 413
- Cooling degree days
- 6
Formoso in May
Highs average 73°23° and lows 51°10°, with 4.2 in106 mm of precipitation in a typical May.
- Record high
- 100°38° (2000)
- Record low
- 27°−3° (1966)
- Heating degree days
- 157
- Cooling degree days
- 66
Formoso in June
Highs average 84°29° and lows 61°16°, with 3.8 in98 mm of precipitation in a typical June.
- Record high
- 107°42° (1988)
- Record low
- 40°4° (1964)
- Heating degree days
- 15
- Cooling degree days
- 248
Formoso in July
Highs average 89°32° and lows 66°19°, with 4.4 in112 mm of precipitation in a typical July.
- Record high
- 109°43° (1964)
- Record low
- 44°7° (1971)
- Heating degree days
- 1
- Cooling degree days
- 390
Formoso in August
Highs average 87°31° and lows 64°18°, with 3.5 in89 mm of precipitation in a typical August.
- Record high
- 109°43° (1959)
- Record low
- 44°7° (1964)
- Heating degree days
- 4
- Cooling degree days
- 326
Formoso in September
Highs average 80°27° and lows 54°12°, with 2.5 in63 mm of precipitation in a typical September.
- Record high
- 108°42° (2000)
- Record low
- 25°−4° (1984)
- Heating degree days
- 76
- Cooling degree days
- 138
Formoso in OctoberThis month
Highs average 67°19° and lows 42°5°, with 1.9 in47 mm of precipitation in a typical October.
- Record high
- 97°36° (2024)
- Record low
- 14°−10° (1993)
- Heating degree days
- 344
- Cooling degree days
- 17
Formoso in November
Highs average 53°12° and lows 30°−1°, with 1.2 in30 mm of precipitation in a typical November.
- Record high
- 85°29° (2006)
- Record low
- −9°−23° (1976)
- Heating degree days
- 714
- Cooling degree days
- 0
Formoso in December
Highs average 41°5° and lows 20°−7°, with 0.88 in22 mm of precipitation in a typical December.
- Record high
- 76°24° (1964)
- Record low
- −29°−34° (1989)
- Heating degree days
- 1071
- Cooling degree days
- 0