St. Robert weather by month
What a typical year looks like in St. Robert, Missouri: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Waynesville 2 W, 7 km from St. Robert; records cover 1941–2025.
The year at a glance
- Precipitation a year
- 47.5 in1205 mm
- Snow a year
- 10 in26 cm
- Last spring freeze
- Apr 15
- First fall freeze
- Oct 14
- Heating degree days
- 4,453
- Cooling degree days
- 1,399
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 3°−16° (heating, 99%) and 98°37° (cooling, 1%).
Month by month
St. Robert in January
Highs average 44°7° and lows 22°−5°, with 2.7 in68 mm of precipitation and 5 in12 cm of snow in a typical January.
- Record high
- 79°26° (1950)
- Record low
- −23°−31° (1985)
- Heating degree days
- 984
- Cooling degree days
- 0
St. Robert in February
Highs average 49°10° and lows 26°−4°, with 2.7 in69 mm of precipitation and 2.9 in7.4 cm of snow in a typical February.
- Record high
- 85°29° (1962)
- Record low
- −23°−31° (1951)
- Heating degree days
- 773
- Cooling degree days
- 0
St. Robert in March
Highs average 59°15° and lows 34°1°, with 4.1 in104 mm of precipitation and 0.9 in2.3 cm of snow in a typical March.
- Record high
- 88°31° (2017)
- Record low
- −14°−26° (1960)
- Heating degree days
- 576
- Cooling degree days
- 6
St. Robert in April
Highs average 69°21° and lows 44°7°, with 4.8 in122 mm of precipitation in a typical April.
- Record high
- 99°37° (1965)
- Record low
- 13°−11° (1989)
- Heating degree days
- 278
- Cooling degree days
- 32
St. Robert in May
Highs average 77°25° and lows 54°12°, with 5.2 in132 mm of precipitation in a typical May.
- Record high
- 96°36° (2022)
- Record low
- 24°−4° (1960)
- Heating degree days
- 98
- Cooling degree days
- 109
St. Robert in June
Highs average 85°29° and lows 63°17°, with 4.7 in119 mm of precipitation in a typical June.
- Record high
- 104°40° (1953)
- Record low
- 35°2° (1972)
- Heating degree days
- 9
- Cooling degree days
- 271
St. Robert in July
Highs average 89°32° and lows 67°19°, with 4.3 in109 mm of precipitation in a typical July.
- Record high
- 115°46° (1954)
- Record low
- 42°6° (1972)
- Heating degree days
- 1
- Cooling degree days
- 404
St. Robert in August
Highs average 89°31° and lows 65°18°, with 4.6 in117 mm of precipitation in a typical August.
- Record high
- 107°42° (1962)
- Record low
- 36°2° (1986)
- Heating degree days
- 2
- Cooling degree days
- 369
St. Robert in September
Highs average 81°27° and lows 56°14°, with 4.2 in106 mm of precipitation in a typical September.
- Record high
- 104°40° (1953)
- Record low
- 24°−4° (1989)
- Heating degree days
- 53
- Cooling degree days
- 169
St. Robert in OctoberThis month
Highs average 71°22° and lows 45°7°, with 3.6 in90 mm of precipitation in a typical October.
- Record high
- 97°36° (1963)
- Record low
- 11°−12° (1952)
- Heating degree days
- 257
- Cooling degree days
- 35
St. Robert in November
Highs average 58°15° and lows 35°2°, with 3.8 in96 mm of precipitation and 0.6 in1.5 cm of snow in a typical November.
- Record high
- 87°31° (2005)
- Record low
- −3°−19° (1951)
- Heating degree days
- 559
- Cooling degree days
- 4
St. Robert in December
Highs average 48°9° and lows 27°−3°, with 2.9 in74 mm of precipitation and 1 in2.5 cm of snow in a typical December.
- Record high
- 79°26° (1949)
- Record low
- −25°−32° (1989)
- Heating degree days
- 863
- Cooling degree days
- 0