Lewellen weather by month
What a typical year looks like in Lewellen, Nebraska: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Oshkosh, 19 km from Lewellen; records cover 1913–2026.
The year at a glance
- Precipitation a year
- 17.9 in455 mm
- Snow a year
- 28 in70 cm
- Last spring freeze
- May 15
- First fall freeze
- Sep 26
- Heating degree days
- 6,585
- Cooling degree days
- 776
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −10°−23° (heating, 99%) and 99°37° (cooling, 1%).
Month by month
Lewellen in January
Highs average 40°4° and lows 13°−11°, with 0.25 in6.4 mm of precipitation and 4 in10 cm of snow in a typical January.
- Record high
- 75°24° (1997)
- Record low
- −34°−37° (1950)
- Heating degree days
- 1206
- Cooling degree days
- 0
Lewellen in February
Highs average 43°6° and lows 15°−9°, with 0.38 in9.7 mm of precipitation and 5 in13 cm of snow in a typical February.
- Record high
- 81°27° (2020)
- Record low
- −34°−37° (2021)
- Heating degree days
- 1000
- Cooling degree days
- 0
Lewellen in March
Highs average 53°12° and lows 24°−5°, with 0.93 in24 mm of precipitation and 4 in10 cm of snow in a typical March.
- Record high
- 97°36° (2026)
- Record low
- −29°−34° (1960)
- Heating degree days
- 817
- Cooling degree days
- 0
Lewellen in April
Highs average 61°16° and lows 32°0°, with 2 in51 mm of precipitation and 4 in10 cm of snow in a typical April.
- Record high
- 95°35° (1989)
- Record low
- −10°−23° (1936)
- Heating degree days
- 549
- Cooling degree days
- 1
Lewellen in May
Highs average 70°21° and lows 44°6°, with 3 in77 mm of precipitation and 0.4 in1 cm of snow in a typical May.
- Record high
- 100°38° (2003)
- Record low
- 14°−10° (1989)
- Heating degree days
- 276
- Cooling degree days
- 26
Lewellen in June
Highs average 82°28° and lows 54°12°, with 3 in76 mm of precipitation in a typical June.
- Record high
- 109°43° (1954)
- Record low
- 29°−2° (1969)
- Heating degree days
- 50
- Cooling degree days
- 143
Lewellen in July
Highs average 88°31° and lows 60°16°, with 2.8 in70 mm of precipitation in a typical July.
- Record high
- 111°44° (1954)
- Record low
- 34°1° (1952)
- Heating degree days
- 4
- Cooling degree days
- 294
Lewellen in August
Highs average 86°30° and lows 58°14°, with 1.9 in49 mm of precipitation in a typical August.
- Record high
- 108°42° (1954)
- Record low
- 35°2° (1964)
- Heating degree days
- 14
- Cooling degree days
- 234
Lewellen in September
Highs average 79°26° and lows 48°9°, with 1.5 in39 mm of precipitation in a typical September.
- Record high
- 103°39° (2013)
- Record low
- 14°−10° (1984)
- Heating degree days
- 130
- Cooling degree days
- 76
Lewellen in OctoberThis month
Highs average 64°18° and lows 34°1°, with 1.3 in34 mm of precipitation and 1.6 in4.1 cm of snow in a typical October.
- Record high
- 94°34° (1947)
- Record low
- −5°−21° (1991)
- Heating degree days
- 500
- Cooling degree days
- 2
Lewellen in November
Highs average 51°11° and lows 22°−6°, with 0.46 in12 mm of precipitation and 4 in9 cm of snow in a typical November.
- Record high
- 83°28° (2006)
- Record low
- −21°−29° (1916)
- Heating degree days
- 855
- Cooling degree days
- 0
Lewellen in December
Highs average 41°5° and lows 13°−11°, with 0.36 in9.1 mm of precipitation and 5 in13 cm of snow in a typical December.
- Record high
- 81°27° (2025)
- Record low
- −47°−44° (1989)
- Heating degree days
- 1184
- Cooling degree days
- 0