Photo: Elcajonfarms at en.wikipedia · CC BY-SA 3.0Few U.S. towns have colder winter nights than Walhalla
Midsummer highs settle at about 79°. Summers stay cool: July afternoons here are cooler than in 94% of U.S. towns. Compared with 1901–2000, the average now sits 1.7° higher. Warm coats and heating bills mark the months from October to April, when means dip under 50°.
A year in Walhalla at a glance
Each month’s typical high and low, and what it brings.
What stands out about Walhalla’s climate
Compared with towns across the U.S., with Walhalla’s place in North Dakota beside it.
What a year in Walhalla feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 139 frost-free days a year
In half of years the last 32° night comes by May 12 and the first by September 30. Frost and day counts come from NOAA’s station at Cavalier 7nw, ND, 11 miles from the town’s center, at about the same height.
The 2023 USDA map puts Walhalla’s center in zone 4a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −29°. 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 39 inches of snow a winter
Snow, measured at Cavalier 7nw, ND, falls mostly in December. Precipitation (rain plus melted snow) adds up to 21 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 86 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Walhalla
97% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through May.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Cavalier 7nw, ND.
Living with Walhalla’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
139 frost-free days in zone 4a. The last frost comes by May 12 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Sep 30.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September.
Parks & trails →Of the yearly building losses FEMA expects in Walhalla from natural hazards, river flooding is the largest share (43%); heat waves, cold waves, winter storms and ice storms together are 41%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Walhalla and similar climates
TownRatings has no climate map of the towns around Walhalla yet.
Climates most like Walhalla’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 |
|---|---|---|---|---|
| Walhalla, ND | −3° | 79° | 21" | 39" |
| Bemidji, MN | −3° | 79° | 26" | 49" |
| Watertown, SD | 2° | 81° | 25" | 41" |
| Gunnison, CO | 0° | 82° | 12" | 50" |
| Kingsford, MI | 5° | 80° | 29" | 61" |
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 Walhalla averaged 1.7° warmer than the 1900s. The biggest change is in January (+4.4°).
A bigger shift than in 70% 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 Walhalla compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Walhalla’s place among North Dakota’s.
Walhalla weather by month
Highs, lows and precipitation from NOAA’s grid at Walhalla’s center; snow, wet days and snow on the ground from Cavalier 7nw, ND. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 14° | −3° | 0.7" | 7.4" | 5 | 31 | −8° – 21° |
| February | 19° | 1° | 0.6" | 4.6" | 4 | 27 | −4° – 25° |
| March | 32° | 15° | 0.9" | 5.7" | 5 | 25 | 13° – 36° |
| April | 51° | 29° | 1.1" | 3.4" | 5 | 5 | 27° – 49° |
| May | 66° | 41° | 3.0" | 0.9" | 10 | 0 | 48° – 60° |
| June | 75° | 53° | 3.8" | 0.0" | 12 | 0 | 60° – 69° |
| July | 79° | 57° | 3.2" | 0.0" | 11 | 0 | 61° – 73° |
| August | 79° | 54° | 2.6" | 0.0" | 9 | 0 | 59° – 70° |
| September | 69° | 46° | 2.2" | 0.0" | 8 | 0 | 52° – 64° |
| October | 52° | 33° | 1.7" | 2.5" | 7 | 2 | 34° – 48° |
| November | 34° | 18° | 0.9" | 5.9" | 5 | 13 | 12° – 40° |
| December | 19° | 4° | 0.9" | 8.7" | 6 | 24 | −3° – 25° |
| Year | 49° | 29° | 21.3" | 39.1" | 86 | 125 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from -8° to 21°. June is the most reliable, staying within 10°.
Where Walhalla’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 Walhalla’s center.
- Snow: Cavalier 7nw, ND.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Cavalier 7nw, ND, 11 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 Walhalla’s climate
What is the weather like in Walhalla?
A typical July afternoon reaches 79°, a January night drops to −3°, and about 39 inches of snow falls in a normal winter. Colder January nights than all but 17 U.S. towns; cooler July afternoons than 94% of U.S. towns.
How cold does it get in Walhalla in winter?
January nights average −3°. About 192 nights a year reach 32° or below and 58 reach 0° or below. In the coldest January of the last 30 years the month averaged −8°.
How much snow does Walhalla get?
About 39 inches in a normal winter at Cavalier 7nw, ND, most of it in December, with snow on the ground about 125 days a year.
How hot does it get in Walhalla?
July, with a typical high of 79° and a low of 57°. About 4 days a year reach 90° (Cavalier 7nw, ND).
When is the first and last frost in Walhalla?
In half of years the last spring frost (32°) comes by May 12 and the first fall frost by September 30, about 139 frost-free days, at Cavalier 7nw, ND.
What growing zone is Walhalla in?
Zone 4a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −29°.
What is the best time of year to visit Walhalla?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Walhalla getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 70% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Walhalla.
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.