Deep Portage, Minnesota climate: Climate normals at a NOAA weather station
Deep Portage's normal year runs from 1°F January nights to 80°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 5.4°C, January lows of −17°C, July highs of 27°C.
- NOAA stationDeep Portage
- Station IDUSC00212050
- Location46.90°N 94.39°W
- Elevation1,471 ft (448 m)
On October 24, the normal high in Deep Portage is 50°F and the normal low 33°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Deep Portage.
- Jan 19° 1°
- Feb 25° 4°
- Mar 38° 18°
- Apr 52° 31°
- May 66° 44°
- Jun 75° 55°
- Jul 80° 59°
- Aug 78° 57°
- Sep 68° 48°
- Oct 54° 36°
- Nov 37° 23°
- Dec 25° 11°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Deep Portage each month?
July is the warmest month, with normal highs of 80°F; January the coldest, with normal lows of 1°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 19°F | 1°F | 9.7°F | – | <1 | 31 | 8 h 50 min |
| February | 25°F | 4°F | 14.9°F | – | <1 | 28 | 10 h 20 min |
| March | 38°F | 18°F | 28.3°F | – | <1 | 28 | 11 h 50 min |
| April | 52°F | 31°F | 41.8°F | – | <1 | 19 | 13 h 30 min |
| May | 66°F | 44°F | 55.3°F | – | <1 | 4 | 15 h |
| June | 75°F | 55°F | 64.8°F | – | 1 | <1 | 15 h 50 min |
| July | 80°F | 59°F | 69.3°F | – | 3 | <1 | 15 h 30 min |
| August | 78°F | 57°F | 67.0°F | – | 1 | <1 | 14 h 20 min |
| September | 68°F | 48°F | 58.3°F | – | <1 | 1 | 12 h 40 min |
| October | 54°F | 36°F | 45.1°F | – | <1 | 14 | 11 h |
| November | 37°F | 23°F | 30.0°F | – | <1 | 25 | 9 h 30 min |
| December | 25°F | 11°F | 17.6°F | – | <1 | 31 | 8 h 30 min |
| Year (annual) | 52°F | 32°F | 41.8°F | – | 5 | 179 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | −7°C | −17°C | −12.4°C |
| February | −4°C | −15°C | −9.5°C |
| March | 3°C | −8°C | −2.1°C |
| April | 11°C | 0°C | 5.4°C |
| May | 19°C | 7°C | 12.9°C |
| June | 24°C | 13°C | 18.2°C |
| July | 27°C | 15°C | 20.7°C |
| August | 25°C | 14°C | 19.4°C |
| September | 20°C | 9°C | 14.6°C |
| October | 12°C | 2°C | 7.3°C |
| November | 3°C | −5°C | −1.1°C |
| December | −4°C | −12°C | −8.0°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Pine River Dam (21 miles away), gets 39 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00212050; 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.
Which months are mildest at Deep Portage?
Normal highs sit between 65°F and 85°F in May, June, July, August and September.
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 USC00212050.
When is the last frost at Deep Portage?
In Deep Portage, the last spring frost (32°F) comes after May 5 in half of years and after May 19 in one year in ten; the first autumn frost comes before October 5 in half of years and before September 22 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 51 year in 10 after May 19; 9 in 10 after April 24
- First autumn frost, half of years before
- October 51 year in 10 before September 22; 9 in 10 before October 20
NOAA puts the median frost-free season at 150 days, and the season without a hard freeze (28°F) at 172 days.
A hard freeze (28°F) comes after April 26 in half of springs and before October 18 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Deep Portage in zone 4a in ZIP code 56452, the nearest ZIP area.
Frost dates for every NOAA station in Minnesota · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00212050; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 at Deep Portage?
In a normal year in Deep Portage, 5 days a year reach 90°F and 179 nights fall to 32°F or colder.
- Days at 90°F or more
- 5a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 179a normal year
- Days that stay below freezing
- 94high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00212050.
How sunny is it at Deep Portage?
Over a year 73% of the sunlight that would reach the ground under clear skies gets through the clouds at Deep Portage, 3.8 kWh per square metre a day. July is the sunniest month (80%) and December the cloudiest (59%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 72% | 1.6 |
| February | 78% | 2.8 |
| March | 74% | 3.8 |
| April | 72% | 4.9 |
| May | 69% | 5.5 |
| June | 73% | 6.0 |
| July | 80% | 6.3 |
| August | 78% | 5.3 |
| September | 73% | 3.9 |
| October | 66% | 2.5 |
| November | 64% | 1.6 |
| December | 59% | 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 many heating and cooling degree days does Deep Portage record?
A normal year at Deep Portage brings 8,802 heating degree days, 64% more than the median U.S. place (5,373), and 398 cooling degree days, 56% 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 2,143 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,716 | 0 |
| February | 1,403 | 0 |
| March | 1,139 | 0 |
| April | 697 | 1 |
| May | 321 | 18 |
| June | 87 | 80 |
| July | 28 | 161 |
| August | 45 | 109 |
| September | 232 | 29 |
| October | 616 | 1 |
| November | 1,051 | 0 |
| December | 1,468 | 0 |
| Year (annual) | 8,802 | 398 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00212050. 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.
How does Deep Portage's climate compare?
Deep Portage is warmer than 46 of the 129 places with their own NOAA record in Minnesota. Across the 7,247 U.S. stations with normals, its annual mean of 41.8°F is warmer than 9%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Deep Portage share this climate record?
5 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.
- Pine River, MN925 people · 12 mi S
- Hackensack, MN300 people · 6 mi W
- Backus, MN266 people · 8 mi SW
- Longville, MN158 people · 10 mi NE
- Chickamaw Beach, MN128 people · 11 mi S
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 Deep Portage's climate
What is the coldest month at Deep Portage?
January, with a normal high of 19°F and a normal low of 1°F. The warmest is July (80°F by day, 59°F at night).
Does it snow at Deep Portage?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Pine River Dam (21 miles away), records 39 inches of snow in a normal year.
What plant hardiness zone is Deep Portage in?
The USDA's 2023 map puts Deep Portage in zone 4a in ZIP code 56452, the nearest ZIP area.
How late can frost come at Deep Portage?
In half of years the last 32°F night comes after May 5; in one year in ten it comes after May 19. Waiting until May 19 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Minnesota climateThe statewide normals and every place in the state
- Walker, MN16 miles from this station, 41.6°F a year
- Pine River Dam, MN21 miles from this station, 41.4°F a year
- Leech Lake, MN25 miles from this station, 40.7°F a year
- Park Rapids, MN32 miles from this station, 40.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made