Crosby, North Dakota climate: Normal weather by month, frost dates and records
Crosby's normal year runs from 0°F January nights to 81°F July afternoons, with 16.1 inches of precipitation and 41 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.6°C, January lows of −18°C, July highs of 27°C, 409 mm of precipitation a year.
- NOAA stationCrosby
- Station IDUSC00321871
- Location48.91°N 103.30°W
- Elevation1,959 ft (597 m)
- Population1,034
On October 23, the normal high in Crosby is 49°F and the normal low 28°F, and the chance of measurable rain or snow is 19%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Crosby.
- Jan 20° 0°
- Feb 24° 4°
- Mar 37° 16°
- Apr 55° 29°
- May 67° 40°
- Jun 75° 50°
- Jul 81° 55°
- Aug 81° 53°
- Sep 70° 44°
- Oct 53° 31°
- Nov 36° 17°
- Dec 23° 5°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Crosby each month?
July is the warmest month, with normal highs of 81°F; January the coldest, with normal lows of 0°F. The most precipitation falls in June (3.23 in), the least in February (0.40 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 20°F | 0°F | 9.7°F | 0.52 | 8.8 | 6 | <1 | 31 | 8 h 40 min |
| February | 24°F | 4°F | 13.8°F | 0.40 | 4.6 | 4 | <1 | 28 | 10 h 10 min |
| March | 37°F | 16°F | 26.5°F | 0.60 | 5.2 | 6 | <1 | 29 | 11 h 50 min |
| April | 55°F | 29°F | 41.5°F | 0.95 | 3.3 | 6 | <1 | 18 | 13 h 40 min |
| May | 67°F | 40°F | 53.7°F | 2.23 | 1.1 | 8 | <1 | 5 | 15 h 10 min |
| June | 75°F | 50°F | 62.8°F | 3.23 | 0.0 | 11 | 2 | <1 | 16 h 10 min |
| July | 81°F | 55°F | 68.1°F | 2.68 | 0.0 | 9 | 4 | <1 | 15 h 50 min |
| August | 81°F | 53°F | 66.9°F | 1.66 | 0.0 | 7 | 4 | <1 | 14 h 30 min |
| September | 70°F | 44°F | 56.8°F | 1.77 | 0.0 | 6 | 1 | 2 | 12 h 40 min |
| October | 53°F | 31°F | 42.2°F | 1.10 | 3.1 | 6 | <1 | 16 | 10 h 50 min |
| November | 36°F | 17°F | 26.4°F | 0.53 | 5.6 | 5 | <1 | 27 | 9 h 10 min |
| December | 23°F | 5°F | 14.1°F | 0.43 | 9.0 | 6 | <1 | 31 | 8 h 20 min |
| Year (annual) | 52°F | 29°F | 40.2°F | 16.10 | 40.7 | 81 | 11 | 186 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −7°C | −18°C | −12.4°C | 13 mm | 22 cm |
| February | −5°C | −16°C | −10.1°C | 10 mm | 12 cm |
| March | 3°C | −9°C | −3.1°C | 15 mm | 13 cm |
| April | 13°C | −2°C | 5.3°C | 24 mm | 8 cm |
| May | 20°C | 5°C | 12.1°C | 57 mm | 3 cm |
| June | 24°C | 10°C | 17.1°C | 82 mm | 0 cm |
| July | 27°C | 13°C | 20.1°C | 68 mm | 0 cm |
| August | 27°C | 12°C | 19.4°C | 42 mm | 0 cm |
| September | 21°C | 7°C | 13.8°C | 45 mm | 0 cm |
| October | 12°C | −1°C | 5.7°C | 28 mm | 8 cm |
| November | 2°C | −8°C | −3.1°C | 13 mm | 14 cm |
| December | −5°C | −15°C | −9.9°C | 11 mm | 23 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00321871; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Crosby?
Normal highs sit between 65°F and 85°F in May, June, July, August and September. Of those, September has the fewest days with rain (6).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00321871.
When is the last frost in Crosby?
In Crosby, the last spring frost (32°F) comes after May 17 in half of years and after May 28 in one year in ten; the first autumn frost comes before September 23 in half of years and before September 11 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- May 171 year in 10 after May 28; 9 in 10 after May 6
- First autumn frost, half of years before
- September 231 year in 10 before September 11; 9 in 10 before October 4
NOAA puts the median frost-free season at 128 days, and the season without a hard freeze (28°F) at 145 days.
A hard freeze (28°F) comes after May 7 in half of springs and before September 30 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Crosby in zone 4a in ZIP code 58730, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Crosby's NOAA station is in zone 4a: the coldest night of a typical year reaches −29°F (27 complete years).
Frost dates for every NOAA station in North Dakota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00321871; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Crosby?
In a normal year in Crosby, 11 days a year reach 90°F, 186 nights fall to 32°F or colder and 81 days bring measurable precipitation.
- Days at 90°F or more
- 11a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 186a normal year
- Days that stay below freezing
- 90high of 32°F or less
- Days with 0.01 inch of precipitation
- 81a normal year
- Days with 1 inch of snow or more
- 16a normal year
The highest temperature in this station's record (since 1907) is 111°F, on July 5, 1937; the lowest is −47°F, on February 16, 1936.
The wettest calendar year on that record is 1963, with 24.60 in; the snowiest season is 1998–99, with 75.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00321871; records: ACIS (NOAA Regional Climate Centers), station USC00321871. Records use complete months only; a month missing more than three days is left out.
How sunny is Crosby?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Crosby, 3.9 kWh per square metre a day. July is the sunniest month (85%) and November the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 82% | 1.7 |
| February | 84% | 2.8 |
| March | 78% | 4.0 |
| April | 73% | 4.9 |
| May | 74% | 5.9 |
| June | 76% | 6.4 |
| July | 85% | 6.8 |
| August | 83% | 5.5 |
| September | 77% | 4.0 |
| October | 70% | 2.5 |
| November | 69% | 1.5 |
| December | 70% | 1.1 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Crosby need?
A normal year in Crosby brings 9,318 heating degree days, 73% more than the median U.S. place (5,373), and 329 cooling degree days, 64% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,959 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,713 | 0 |
| February | 1,432 | 0 |
| March | 1,194 | 0 |
| April | 704 | 0 |
| May | 360 | 10 |
| June | 115 | 51 |
| July | 33 | 129 |
| August | 55 | 116 |
| September | 269 | 23 |
| October | 708 | 1 |
| November | 1,158 | 0 |
| December | 1,578 | 0 |
| Year (annual) | 9,318 | 329 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00321871. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Crosby been warmer than normal lately?
Over 83 complete years from 1909 to 2022, the station's annual mean temperature rose at a fitted 2.9°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Crosby's climate compare?
Crosby is warmer than 31 of the other 91 places with their own NOAA record in North Dakota, and wetter than 6. Across the 7,247 U.S. stations with normals, its annual mean of 40.2°F is warmer than 6%.
In the Köppen classification computed from these normals, Crosby is Dfb: continental, no dry season, warm summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Crosby share this climate record?
4 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Noonan, ND134 people · 13 mi E
- Columbus, ND132 people · 23 mi E
- Ambrose, ND15 people · 9 mi W
- Larson, ND5 people · 20 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Crosby's climate
What is the coldest month in Crosby?
January, with a normal high of 20°F and a normal low of 0°F. The warmest is July (81°F by day, 55°F at night).
Does it snow in Crosby?
Yes: 41 inches in a normal year, falling on 26 days with 0.1 inch or more, the most in December (9.0 inches).
What is the rainiest month in Crosby?
June, with 3.23 in of precipitation in a normal year; the driest is February with 0.40 in.
What plant hardiness zone is Crosby in?
The USDA's 2023 map puts Crosby in zone 4a in ZIP code 58730, the nearest ZIP area. By the same method at Crosby's NOAA station, the coldest night of a typical year reaches −29°F (27 years, 1991-2020): zone 4a.
How late can frost come in Crosby?
In half of years the last 32°F night comes after May 17; in one year in ten it comes after May 28. Waiting until May 28 leaves about a one-in-ten chance of a later frost.
Nearby and next
- North Dakota climateThe statewide normals and every place in the state
- Wildrose, ND18 miles from this station, 38.8°F a year
- Fortuna, ND23 miles from this station, 38.3°F a year
- Westby, MT34 miles from this station, 39.1°F a year
- Powers Lake, ND38 miles from this station, 38.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made