Photo: I, the copyright holder of this work, hereby publish it under the following license: · CC BY-SA 3.0Mellen gets about 103 inches of snow a winter, more than 97% of U.S. towns
On a normal July day the thermometer tops out near 78°. The seasons are far apart: from a winter night to a summer afternoon the average spans 74°. In July, afternoons here are cooler than in 96% of U.S. towns. Seedlings are safe outdoors from about May 26, with the first autumn frost due around September 27.
A year in Mellen at a glance
Each month’s typical high and low, and what it brings.
What stands out about Mellen’s climate
Compared with towns across the U.S., with Mellen’s place in Wisconsin beside it.
What a year in Mellen feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 125 frost-free days a year
In half of years the last 32° night comes by May 26 and the first by September 27. Frost and day counts come from NOAA’s station at Mellen 4 Ne, WI, 3 miles from the town’s center, at about the same height.
The 2023 USDA map puts Mellen’s center in zone 4a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −25°. 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 103 inches of snow a winter
Snow, measured at Mellen 4 Ne, WI, falls mostly in January and December. Precipitation (rain plus melted snow) adds up to 35 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 139 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Mellen
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 Mellen 4 Ne, WI.
Living with Mellen’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
125 frost-free days in zone 4a. The last frost comes by May 26 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: June, July, August and September. 1.2 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Mellen from natural hazards, river flooding is the largest share (48%); heat waves, cold waves, winter storms and ice storms together are 47%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Mellen and its neighbors
Every town next door is within a degree of Mellen in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Mellen’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 |
|---|---|---|---|---|
| Mellen, WI | 3° | 78° | 35" | 103" |
| Presque Isle, ME | 2° | 77° | 41" | 98" |
| St. Johnsbury, VT | 5° | 79° | 41" | 87" |
| Malone, NY | 7° | 79° | 41" | 98" |
| Sault Ste. Marie, MI | 8° | 76° | 37" | 120" |
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 Mellen averaged 1.4° warmer than the 1900s. The biggest change is in December (+3.6°).
A bigger 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 Mellen compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Mellen’s place among Wisconsin’s.
Mellen weather by month
Highs, lows and precipitation from NOAA’s grid at Mellen’s center; snow, wet days and snow on the ground from Mellen 4 Ne, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 20° | 3° | 1.5" | 23.8" | 14 | 31 | 0° – 24° |
| February | 26° | 5° | 1.2" | 16.8" | 10 | 29 | 5° – 31° |
| March | 37° | 15° | 1.8" | 16.1" | 10 | 27 | 16° – 41° |
| April | 50° | 28° | 2.9" | 8.7" | 11 | 10 | 30° – 47° |
| May | 65° | 40° | 3.8" | 0.6" | 12 | 0 | 46° – 58° |
| June | 74° | 50° | 4.2" | 0.0" | 13 | 0 | 58° – 66° |
| July | 78° | 55° | 4.5" | 0.0" | 11 | 0 | 60° – 71° |
| August | 76° | 53° | 3.8" | 0.0" | 10 | 0 | 58° – 68° |
| September | 68° | 46° | 3.7" | 0.2" | 12 | 0 | 50° – 61° |
| October | 53° | 34° | 3.6" | 1.5" | 13 | 1 | 37° – 49° |
| November | 37° | 22° | 2.2" | 12.8" | 11 | 13 | 20° – 41° |
| December | 25° | 11° | 1.7" | 22.1" | 13 | 28 | 6° – 28° |
| Year | 51° | 30° | 34.9" | 102.6" | 139 | 138 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 5° to 31°. June is the most reliable, staying within 8°.
Where Mellen’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 Mellen’s center.
- Snow: Mellen 4 Ne, WI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Mellen 4 Ne, WI, 3 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 Mellen’s climate
What is the weather like in Mellen?
A typical July afternoon reaches 78°, a January night drops to 3°, and about 103 inches of snow falls in a normal winter. Colder January nights than all but 133 U.S. towns; cooler July afternoons than 96% of U.S. towns.
How cold does it get in Mellen in winter?
January nights average 3°. About 190 nights a year reach 32° or below and 38 reach 0° or below. In the coldest January of the last 30 years the month averaged 0°.
How much snow does Mellen get?
About 103 inches in a normal winter at Mellen 4 Ne, WI, most of it in January and December, with snow on the ground about 138 days a year.
How hot does it get in Mellen?
July, with a typical high of 78° and a low of 55°. About 2 days a year reach 90° (Mellen 4 Ne, WI).
When is the first and last frost in Mellen?
In half of years the last spring frost (32°) comes by May 26 and the first fall frost by September 27, about 125 frost-free days, at Mellen 4 Ne, WI.
What growing zone is Mellen in?
Zone 4a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −25°.
What is the best time of year to visit Mellen?
By one simple rule (highs of 62–84° and lows of 40° or more), June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Mellen getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 54% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Mellen.
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.