Munising, Michigan climate: Normal weather by month, frost dates and records
Munising's normal year runs from 11°F January nights to 73°F July afternoons, with 39.9 inches of precipitation and 161 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 4.9°C, January lows of −11°C, July highs of 23°C, 1,012 mm of precipitation a year.
- NOAA stationMunising
- Station IDUSC00205690
- Location46.41°N 86.66°W
- Elevation680 ft (207 m)
- Population1,948
On October 22, the normal high in Munising is 49°F and the normal low 36°F, and the chance of measurable rain or snow is 57%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Munising.
- Jan 23° 11°
- Feb 25° 12°
- Mar 33° 19°
- Apr 45° 29°
- May 59° 39°
- Jun 68° 49°
- Jul 73° 55°
- Aug 72° 55°
- Sep 65° 49°
- Oct 52° 38°
- Nov 39° 28°
- Dec 29° 18°
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 Munising each month?
July is the warmest month, with normal highs of 73°F; January the coldest, with normal lows of 11°F. The most precipitation falls in October (4.93 in), the least in March (2.01 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 23°F | 11°F | 17.4°F | 3.54 | 46.0 | 22 | <1 | 31 | 9 h |
| February | 25°F | 12°F | 18.4°F | 2.38 | 32.4 | 17 | <1 | 28 | 10 h 20 min |
| March | 33°F | 19°F | 26.2°F | 2.01 | 17.9 | 12 | <1 | 28 | 11 h 50 min |
| April | 45°F | 29°F | 36.6°F | 2.94 | 9.6 | 11 | <1 | 20 | 13 h 30 min |
| May | 59°F | 39°F | 48.9°F | 3.08 | 0.0 | 13 | <1 | 5 | 15 h |
| June | 68°F | 49°F | 58.3°F | 3.23 | 0.0 | 12 | <1 | <1 | 15 h 50 min |
| July | 73°F | 55°F | 64.1°F | 3.44 | 0.0 | 12 | 1 | <1 | 15 h 30 min |
| August | 72°F | 55°F | 63.4°F | 3.15 | 0.0 | 10 | <1 | <1 | 14 h 10 min |
| September | 65°F | 49°F | 56.7°F | 4.24 | 0.0 | 14 | <1 | <1 | 12 h 40 min |
| October | 52°F | 38°F | 44.6°F | 4.93 | 1.1 | 18 | <1 | 7 | 11 h |
| November | 39°F | 28°F | 33.3°F | 3.47 | 14.9 | 17 | <1 | 21 | 9 h 30 min |
| December | 29°F | 18°F | 23.5°F | 3.44 | 39.1 | 19 | <1 | 30 | 8 h 40 min |
| Year (annual) | 49°F | 33°F | 40.9°F | 39.85 | 161.0 | 176 | 1 | 169 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | −5°C | −11°C | −8.1°C | 90 mm | 117 cm |
| February | −4°C | −11°C | −7.6°C | 60 mm | 82 cm |
| March | 1°C | −7°C | −3.2°C | 51 mm | 45 cm |
| April | 7°C | −2°C | 2.6°C | 75 mm | 24 cm |
| May | 15°C | 4°C | 9.4°C | 78 mm | 0 cm |
| June | 20°C | 9°C | 14.6°C | 82 mm | 0 cm |
| July | 23°C | 13°C | 17.8°C | 87 mm | 0 cm |
| August | 22°C | 13°C | 17.4°C | 80 mm | 0 cm |
| September | 18°C | 9°C | 13.7°C | 108 mm | 0 cm |
| October | 11°C | 3°C | 7.0°C | 125 mm | 3 cm |
| November | 4°C | −2°C | 0.7°C | 88 mm | 38 cm |
| December | −2°C | −8°C | −4.7°C | 87 mm | 99 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00205690; 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 Munising?
Normal highs sit between 65°F and 85°F in June, July and August. Of those, August has the fewest days with rain (10).
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 USC00205690.
When is the last frost in Munising?
In Munising, the last spring frost (32°F) comes after May 16 in half of years and after June 2 in one year in ten; the first autumn frost comes before October 14 in half of years and before September 30 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 161 year in 10 after June 2; 9 in 10 after May 1
- First autumn frost, half of years before
- October 141 year in 10 before September 30; 9 in 10 before October 30
NOAA puts the median frost-free season at 148 days, and the season without a hard freeze (28°F) at 174 days.
A hard freeze (28°F) comes after May 3 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Munising in zone 5b in ZIP code 49862, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Munising's NOAA station is in zone 6a: the coldest night of a typical year reaches −10°F (28 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Michigan · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00205690; 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 Munising?
In a normal year in Munising, 1 day a year reaches 90°F, 169 nights fall to 32°F or colder and 176 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 169a normal year
- Days that stay below freezing
- 85high of 32°F or less
- Days with 0.01 inch of precipitation
- 176a normal year
- Days with 1 inch of snow or more
- 53a normal year
The highest temperature in this station's record (since 1911) is 103°F, on July 9, 1936; the lowest is −33°F, on February 25, 1928.
The wettest calendar year on that record is 2017, with 51.80 in; the snowiest season is 2024–25, with 257.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00205690; records: ACIS (NOAA Regional Climate Centers), station USC00205690. Records use complete months only; a month missing more than three days is left out.
How sunny is Munising?
Over a year 67% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Munising, 3.4 kWh per square metre a day. July is the sunniest month (77%) and December the cloudiest (48%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 49% | 1.1 |
| February | 55% | 1.9 |
| March | 63% | 3.2 |
| April | 66% | 4.4 |
| May | 69% | 5.4 |
| June | 72% | 5.9 |
| July | 77% | 6.0 |
| August | 75% | 5.0 |
| September | 70% | 3.7 |
| October | 60% | 2.2 |
| November | 52% | 1.3 |
| December | 48% | 0.9 |
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 Munising need?
A normal year in Munising brings 8,907 heating degree days, 66% more than the median U.S. place (5,373), and 169 cooling degree days, 81% 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 1,497 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,476 | 0 |
| February | 1,305 | 0 |
| March | 1,203 | 0 |
| April | 854 | 0 |
| May | 506 | 6 |
| June | 231 | 30 |
| July | 100 | 71 |
| August | 98 | 48 |
| September | 265 | 15 |
| October | 631 | 1 |
| November | 951 | 0 |
| December | 1,288 | 0 |
| Year (annual) | 8,907 | 169 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00205690. 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 Munising been warmer than normal lately?
2024 averaged 45.0°F, 4.1°F above the 1991-2020 normal of 40.9°F. 2 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 40.6°F | −0.3°F | 44.91 | 212.2 |
| 2023 | 43.3°F | +2.4°F | 41.24 | 147.5 |
| 2024 | 45.0°F | +4.1°F | 47.64 | 174.0 |
Over 98 complete years from 1897 to 2024, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.19°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00205690; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Munising's climate compare?
Munising is warmer than 7 of the other 139 places with their own NOAA record in Michigan, and wetter than 120. Across the 7,247 U.S. stations with normals, its annual mean of 40.9°F is warmer than 7%.
In the Köppen classification computed from these normals, Munising 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.
Questions about Munising's climate
What is the coldest month in Munising?
January, with a normal high of 23°F and a normal low of 11°F. The warmest is July (73°F by day, 55°F at night).
Does it snow in Munising?
Yes: 161 inches in a normal year, falling on 76 days with 0.1 inch or more, the most in January (46.0 inches).
What is the rainiest month in Munising?
October, with 4.93 in of precipitation in a normal year; the driest is March with 2.01 in.
What plant hardiness zone is Munising in?
The USDA's 2023 map puts Munising in zone 5b in ZIP code 49862, the nearest ZIP area. By the same method at Munising's NOAA station, the coldest night of a typical year reaches −10°F (28 years, 1991-2020): zone 6a.
How late can frost come in Munising?
In half of years the last 32°F night comes after May 16; in one year in ten it comes after June 2. Waiting until June 2 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Michigan climateThe statewide normals and every place in the state
- Munsing Lakeshore, MI1 miles from this station, 42.3°F a year
- Chatham, MI14 miles from this station, 40.6°F a year
- Ki Sawyer Wastewater Treatment Plant, MI35 miles from this station, 41.9°F a year
- Marquette, MI35 miles from this station, 42.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made