Brenna Township has some of the coldest winter nights among U.S. towns
Peak summer warmth arrives in July, with afternoons near 81°. Only 83° separates winter nights from summer afternoons. It is a dry place: less rain and snow fall here than on 88% of U.S. towns. Picnics, hikes and garden evenings come into their own from May to September, with highs of 67–81°.
A year in Brenna Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Brenna Township’s climate
Compared with towns across the U.S., with Brenna Township’s place in North Dakota beside it.
What a year in Brenna Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 133 frost-free days a year
In half of years the last 32° night comes by May 16 and the first by September 27. Frost and day counts come from NOAA’s station at Grand Forks International Airport, 4 miles from the town’s center, at about the same height.
The 2023 USDA map puts Brenna Township’s center in zone 4a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −28°. 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 48 inches of snow a winter
Snow, measured at Grand Forks International Airport, falls mostly in December. Precipitation (rain plus melted snow) adds up to 22 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 105 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Brenna Township
96% 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 Grand Forks International Airport.
Living with Brenna Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
133 frost-free days in zone 4a. The last frost comes by May 16 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 27.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 3.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Brenna Township from natural hazards, river flooding is the largest share (54%); heat waves, cold waves, winter storms and ice storms together are 20%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Brenna Township and its neighbors
Every town next door is within a degree of Brenna Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Brenna Township’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 |
|---|---|---|---|---|
| Brenna Township, ND | −2° | 81° | 22" | 48" |
| Watertown, SD | 2° | 81° | 25" | 41" |
| Morris, MN | 2° | 82° | 26" | 45" |
| Gunnison, CO | 0° | 82° | 12" | 50" |
| Kingsford, MI | 5° | 80° | 29" | 61" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Brenna Township averaged 1.3° warmer than the 1900s. The biggest change is in January (+3.8°).
A smaller shift than in 54% 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 Brenna Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Brenna Township’s place among North Dakota’s.
Brenna Township weather by month
Highs, lows and precipitation from NOAA’s grid at Brenna Township’s center; snow, wet days and snow on the ground from Grand Forks International Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 16° | −2° | 0.5" | 9.9" | 8 | 30 | −7° – 22° |
| February | 21° | 2° | 0.5" | 7.1" | 7 | 25 | −2° – 25° |
| March | 35° | 16° | 0.9" | 7.4" | 7 | 19 | 15° – 39° |
| April | 53° | 31° | 1.3" | 3.5" | 8 | 4 | 32° – 50° |
| May | 67° | 43° | 2.9" | 0.0" | 11 | 0 | 49° – 61° |
| June | 77° | 54° | 3.9" | 0.0" | 12 | 0 | 61° – 70° |
| July | 81° | 58° | 3.5" | 0.0" | 10 | 0 | 62° – 75° |
| August | 80° | 55° | 2.7" | 0.0" | 9 | 0 | 61° – 71° |
| September | 71° | 47° | 2.4" | 0.0" | 9 | 0 | 53° – 65° |
| October | 54° | 34° | 1.9" | 1.6" | 8 | 1 | 35° – 51° |
| November | 36° | 19° | 0.9" | 6.6" | 7 | 10 | 15° – 41° |
| December | 22° | 6° | 0.7" | 12.3" | 9 | 25 | 0° – 23° |
| Year | 51° | 30° | 22.2" | 48.4" | 105 | 113 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from -7° to 22°. June is the most reliable, staying within 9°.
Where Brenna Township’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 Brenna Township’s center.
- Snow: Grand Forks International Airport.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Grand Forks International Airport, 4 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 Brenna Township’s climate
What is the weather like in Brenna Township?
A typical July afternoon reaches 81°, a January night drops to −2°, and about 48 inches of snow falls in a normal winter. Colder January nights than all but 26 U.S. towns; cooler July afternoons than 86% of U.S. towns.
How cold does it get in Brenna Township in winter?
January nights average −2°. About 185 nights a year reach 32° or below and 51 reach 0° or below. In the coldest January of the last 30 years the month averaged −7°.
How much snow does Brenna Township get?
About 48 inches in a normal winter at Grand Forks International Airport, most of it in December, with snow on the ground about 113 days a year.
How hot does it get in Brenna Township?
July, with a typical high of 81° and a low of 58°. About 9 days a year reach 90° (Grand Forks International Airport).
When is the first and last frost in Brenna Township?
In half of years the last spring frost (32°) comes by May 16 and the first fall frost by September 27, about 133 frost-free days, at Grand Forks International Airport.
What growing zone is Brenna Township in?
Zone 4a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −28°.
What is the best time of year to visit Brenna Township?
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 Brenna Township getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 54% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Brenna Township.
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.