Fortuna weather by month
What a typical year looks like in Fortuna, Missouri: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at California, 22 km from Fortuna; records cover 1954–2026.
The year at a glance
- Precipitation a year
- 43.2 in1096 mm
- Snow a year
- 10 in25 cm
- Last spring freeze
- Apr 8
- First fall freeze
- Oct 27
- Heating degree days
- 4,940
- Cooling degree days
- 1,314
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 1°−17° (heating, 99%) and 97°36° (cooling, 1%).
Month by month
Fortuna in January
Highs average 40°4° and lows 20°−7°, with 2 in51 mm of precipitation and 3 in8 cm of snow in a typical January.
- Record high
- 78°26° (1967)
- Record low
- −17°−27° (1982)
- Heating degree days
- 1092
- Cooling degree days
- 0
Fortuna in February
Highs average 45°7° and lows 24°−5°, with 2.3 in59 mm of precipitation and 1.8 in4.6 cm of snow in a typical February.
- Record high
- 82°28° (1972)
- Record low
- −14°−26° (1979)
- Heating degree days
- 854
- Cooling degree days
- 0
Fortuna in March
Highs average 55°13° and lows 33°1°, with 3 in75 mm of precipitation and 0.7 in1.8 cm of snow in a typical March.
- Record high
- 91°33° (2026)
- Record low
- −10°−23° (1960)
- Heating degree days
- 643
- Cooling degree days
- 3
Fortuna in April
Highs average 66°19° and lows 44°6°, with 4.9 in124 mm of precipitation in a typical April.
- Record high
- 92°33° (1987)
- Record low
- 19°−7° (1975)
- Heating degree days
- 326
- Cooling degree days
- 19
Fortuna in May
Highs average 75°24° and lows 54°12°, with 5 in126 mm of precipitation in a typical May.
- Record high
- 94°34° (1956)
- Record low
- 30°−1° (1976)
- Heating degree days
- 108
- Cooling degree days
- 96
Fortuna in June
Highs average 84°29° and lows 63°17°, with 4.4 in112 mm of precipitation in a typical June.
- Record high
- 104°40° (2012)
- Record low
- 43°6° (1993)
- Heating degree days
- 9
- Cooling degree days
- 261
Fortuna in July
Highs average 88°31° and lows 67°20°, with 4.7 in120 mm of precipitation in a typical July.
- Record high
- 109°43° (1980)
- Record low
- 48°9° (1972)
- Heating degree days
- 0
- Cooling degree days
- 391
Fortuna in August
Highs average 87°31° and lows 66°19°, with 3.9 in99 mm of precipitation in a typical August.
- Record high
- 108°42° (1980)
- Record low
- 45°7° (1986)
- Heating degree days
- 2
- Cooling degree days
- 355
Fortuna in September
Highs average 80°27° and lows 57°14°, with 4.1 in104 mm of precipitation in a typical September.
- Record high
- 104°40° (1954)
- Record low
- 30°−1° (1984)
- Heating degree days
- 53
- Cooling degree days
- 158
Fortuna in OctoberThis month
Highs average 68°20° and lows 45°7°, with 3.8 in96 mm of precipitation in a typical October.
- Record high
- 96°36° (1976)
- Record low
- 17°−8° (2010)
- Heating degree days
- 286
- Cooling degree days
- 29
Fortuna in November
Highs average 55°13° and lows 34°1°, with 3.2 in81 mm of precipitation and 0.4 in1 cm of snow in a typical November.
- Record high
- 85°29° (1964)
- Record low
- −1°−18° (1991)
- Heating degree days
- 617
- Cooling degree days
- 2
Fortuna in December
Highs average 44°7° and lows 25°−4°, with 1.9 in49 mm of precipitation and 4 in9 cm of snow in a typical December.
- Record high
- 75°24° (1991)
- Record low
- −21°−29° (1989)
- Heating degree days
- 950
- Cooling degree days
- 0