Portis weather by month
What a typical year looks like in Portis, Kansas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Smith Center, 25 km from Portis; records cover 1910–2026.
The year at a glance
- Precipitation a year
- 26.1 in663 mm
- Snow a year
- 18 in46 cm
- Last spring freeze
- Apr 18
- First fall freeze
- Oct 14
- Heating degree days
- 5,646
- Cooling degree days
- 1,342
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 104°40° (cooling, 1%).
Month by month
Portis in January
Highs average 39°4° and lows 16°−9°, with 0.59 in15 mm of precipitation and 4 in11 cm of snow in a typical January.
- Record high
- 79°26° (1990)
- Record low
- −26°−32° (1959)
- Heating degree days
- 1169
- Cooling degree days
- 0
Portis in February
Highs average 44°7° and lows 19°−7°, with 0.7 in18 mm of precipitation and 6 in15 cm of snow in a typical February.
- Record high
- 85°29° (1972)
- Record low
- −20°−29° (2021)
- Heating degree days
- 945
- Cooling degree days
- 0
Portis in March
Highs average 55°13° and lows 28°−2°, with 1.5 in37 mm of precipitation and 2.3 in5.8 cm of snow in a typical March.
- Record high
- 98°37° (2026)
- Record low
- −18°−28° (1960)
- Heating degree days
- 725
- Cooling degree days
- 1
Portis in April
Highs average 66°19° and lows 38°3°, with 2.1 in54 mm of precipitation and 0.7 in1.8 cm of snow in a typical April.
- Record high
- 102°39° (1989)
- Record low
- 11°−12° (1920)
- Heating degree days
- 406
- Cooling degree days
- 10
Portis in May
Highs average 76°24° and lows 50°10°, with 4 in102 mm of precipitation in a typical May.
- Record high
- 105°41° (1913)
- Record low
- 27°−3° (1967)
- Heating degree days
- 146
- Cooling degree days
- 83
Portis in June
Highs average 87°31° and lows 61°16°, with 3.6 in92 mm of precipitation in a typical June.
- Record high
- 113°45° (2012)
- Record low
- 38°3° (1998)
- Heating degree days
- 11
- Cooling degree days
- 282
Portis in July
Highs average 92°33° and lows 66°19°, with 4.4 in112 mm of precipitation in a typical July.
- Record high
- 112°44° (1913)
- Record low
- 43°6° (1959)
- Heating degree days
- 0
- Cooling degree days
- 437
Portis in August
Highs average 89°32° and lows 63°17°, with 3.4 in87 mm of precipitation in a typical August.
- Record high
- 111°44° (1983)
- Record low
- 40°4° (1915)
- Heating degree days
- 3
- Cooling degree days
- 352
Portis in September
Highs average 82°28° and lows 54°12°, with 2 in50 mm of precipitation in a typical September.
- Record high
- 105°41° (1913)
- Record low
- 23°−5° (1984)
- Heating degree days
- 66
- Cooling degree days
- 158
Portis in OctoberThis month
Highs average 68°20° and lows 41°5°, with 1.9 in47 mm of precipitation and 0.5 in1.3 cm of snow in a typical October.
- Record high
- 98°37° (1924)
- Record low
- 3°−16° (1997)
- Heating degree days
- 348
- Cooling degree days
- 19
Portis in November
Highs average 53°12° and lows 28°−2°, with 1.2 in29 mm of precipitation and 1.5 in3.8 cm of snow in a typical November.
- Record high
- 87°31° (1980)
- Record low
- −6°−21° (1958)
- Heating degree days
- 734
- Cooling degree days
- 0
Portis in December
Highs average 41°5° and lows 19°−7°, with 0.79 in20 mm of precipitation and 3 in8 cm of snow in a typical December.
- Record high
- 77°25° (2021)
- Record low
- −26°−32° (1989)
- Heating degree days
- 1093
- Cooling degree days
- 0