Lewellen State Aid Bridge · Photo: Ammodramus · Public domainLess rain and snow falls on Lewellen than on 91% of U.S. towns: 18 inches a year
On a normal July day the thermometer tops out near 89°. Its January nights bite harder than in 85% of U.S. towns. Warming shows here too: 1.3° more than in 1901–2000, led by March. Comfortable outdoor weather, highs of 71–83°, belongs to May, June and September.
A year in Lewellen at a glance
Each month’s typical high and low, and what it brings.
What stands out about Lewellen’s climate
Compared with towns across the U.S., with Lewellen’s place in Nebraska beside it.
What a year in Lewellen feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 144 frost-free days a year
In half of years the last 32° night comes by May 9 and the first by October 2. Frost and day counts come from NOAA’s station at Oshkosh, NE, 12 miles from the town’s center, at about the same height.
The 2023 USDA map puts Lewellen’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −15°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 28 inches of snow a winter
Snow, measured at Oshkosh, NE, falls mostly in February and December. Precipitation (rain plus melted snow) adds up to 18 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 66 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Lewellen
89% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Oshkosh, NE.
Living with Lewellen’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
144 frost-free days in zone 5b. The last frost comes by May 9 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 2.
Months with highs of 62–84° and lows of 40° or more: May, June and September.
Parks & trails →Of the yearly building losses FEMA expects in Lewellen from natural hazards, drought is the largest share (28%); heat waves, cold waves, winter storms and ice storms together are 8%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Lewellen and similar climates
TownRatings has no climate map of the towns around Lewellen yet.
Climates most like Lewellen’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Lewellen, NE | 15° | 89° | 18" | 28" |
| Fountain, CO | 18° | 89° | 16" | 33" |
| Lockwood, MT | 15° | 88° | 15" | 35" |
| Sheridan, WY | 11° | 89° | 15" | 33" |
| Providence, UT | 15° | 89° | 19" | 44" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Lewellen averaged 1.3° warmer than the 1900s. The biggest change is in March (+3.4°).
A smaller shift than in 52% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Lewellen compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Lewellen’s place among Nebraska’s.
Lewellen weather by month
Highs, lows and precipitation from NOAA’s grid at Lewellen’s center; snow, wet days and snow on the ground from Oshkosh, NE. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 40° | 15° | 0.3" | 3.8" | 2 | 11 | 20° – 37° |
| February | 43° | 17° | 0.4" | 5.3" | 3 | 8 | 20° – 38° |
| March | 54° | 26° | 0.9" | 4.1" | 4 | 3 | 32° – 49° |
| April | 62° | 34° | 2.0" | 3.8" | 7 | 1 | 41° – 54° |
| May | 71° | 45° | 2.9" | 0.4" | 10 | 0 | 51° – 63° |
| June | 83° | 55° | 3.2" | 0.0" | 10 | 0 | 64° – 75° |
| July | 89° | 61° | 2.8" | 0.0" | 8 | 0 | 69° – 79° |
| August | 87° | 59° | 2.2" | 0.0" | 7 | 0 | 68° – 77° |
| September | 79° | 49° | 1.5" | 0.0" | 5 | 0 | 58° – 69° |
| October | 65° | 35° | 1.3" | 1.6" | 5 | 1 | 41° – 55° |
| November | 52° | 24° | 0.5" | 3.6" | 3 | 3 | 29° – 45° |
| December | 41° | 16° | 0.3" | 5.1" | 2 | 8 | 20° – 34° |
| Year | 64° | 36° | 18.1" | 27.7" | 66 | 35 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 20° to 38°. August is the most reliable, staying within 9°.
Where Lewellen’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Lewellen’s center.
- Snow: Oshkosh, NE.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Oshkosh, NE, 12 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Lewellen’s climate
What is the weather like in Lewellen?
A typical July afternoon reaches 89°, a January night drops to 15°, and about 28 inches of snow falls in a normal winter. Colder January nights than 85% of U.S. towns; hotter July afternoons than 73% of U.S. towns.
How cold does it get in Lewellen in winter?
January nights average 15°. About 179 nights a year reach 32° or below and 14 reach 0° or below. In the coldest January of the last 30 years the month averaged 20°.
How much snow does Lewellen get?
About 28 inches in a normal winter at Oshkosh, NE, most of it in February and December, with snow on the ground about 35 days a year.
How hot does it get in Lewellen?
July, with a typical high of 89° and a low of 61°. About 39 days a year reach 90° and 4 reach 100° (Oshkosh, NE).
When is the first and last frost in Lewellen?
In half of years the last spring frost (32°) comes by May 9 and the first fall frost by October 2, about 144 frost-free days, at Oshkosh, NE.
What growing zone is Lewellen in?
Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −15°.
What is the best time of year to visit Lewellen?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Lewellen getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 52% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Lewellen.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.