Photo: The original uploader was Nationalparks at English Wikipedia. · CC BY-SA 2.5Bayfield gets about 106 inches of snow a winter, more than 98% of U.S. towns
On a normal July day the thermometer tops out near 77°. By July afternoons alone, it runs cooler than 97% of U.S. towns. Since 1901–2000, the year has warmed by 1.6°, most of all in December. Warm coats and heating bills mark the months from October to April, when means dip under 50°.
A year in Bayfield at a glance
Each month’s typical high and low, and what it brings.
What stands out about Bayfield’s climate
Compared with towns across the U.S., with Bayfield’s place in Wisconsin beside it.
What a year in Bayfield feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 141 frost-free days a year
In half of years the last 32° night comes by May 20 and the first by October 8. Frost and day counts come from NOAA’s station at Bayfield 6 N, WI, 6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Bayfield’s center in zone 5a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −18°. 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 106 inches of snow a winter
Snow, measured at Bayfield 6 N, WI, falls mostly in January. Precipitation (rain plus melted snow) adds up to 30 inches a year; July is the wettest month and February the driest. Rain or snow falls on about 154 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Bayfield
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 Bayfield 6 N, WI.
Living with Bayfield’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
141 frost-free days in zone 5a. The last frost comes by May 20 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 8.
Months with highs of 62–84° and lows of 40° or more: June, July, August and September. 103 miles of trails are waiting.
Parks & trails →Cold waves are 60% of the yearly building losses FEMA expects in Bayfield from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →Bayfield and its neighbors
Bell has the coldest January nights next door (4°, 2° colder) and Bell the hottest July afternoons (78°, 1° warmer). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Bayfield’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 |
|---|---|---|---|---|
| Bayfield, WI | 6° | 77° | 30" | 106" |
| Marquette, MI | 11° | 76° | 32" | 102" |
| Beekmantown, NY | 9° | 80° | 35" | 80" |
| Woodland Park, CO | 11° | 77° | 22" | 134" |
| Presque Isle, ME | 2° | 77° | 41" | 98" |
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 Bayfield averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 63% 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 Bayfield compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Bayfield’s place among Wisconsin’s.
Bayfield weather by month
Highs, lows and precipitation from NOAA’s grid at Bayfield’s center; snow, wet days and snow on the ground from Bayfield 6 N, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 22° | 6° | 1.3" | 29.5" | 18 | 31 | 2° – 27° |
| February | 27° | 8° | 1.0" | 15.8" | 11 | 28 | 7° – 31° |
| March | 37° | 18° | 1.6" | 14.6" | 12 | 27 | 18° – 40° |
| April | 49° | 29° | 2.6" | 5.1" | 11 | 9 | 31° – 45° |
| May | 62° | 39° | 3.3" | 0.8" | 12 | 0 | 45° – 55° |
| June | 71° | 49° | 3.6" | 0.0" | 12 | 0 | 56° – 63° |
| July | 77° | 55° | 3.7" | 0.0" | 14 | 0 | 59° – 71° |
| August | 75° | 55° | 3.3" | 0.0" | 11 | 0 | 60° – 68° |
| September | 67° | 48° | 3.1" | 0.0" | 14 | 0 | 50° – 62° |
| October | 53° | 36° | 3.2" | 1.0" | 13 | 0 | 39° – 49° |
| November | 39° | 25° | 2.0" | 13.3" | 12 | 12 | 23° – 41° |
| December | 27° | 13° | 1.7" | 26.2" | 14 | 26 | 9° – 29° |
| Year | 50° | 32° | 30.4" | 106.3" | 154 | 134 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 2° to 27°. June is the most reliable, staying within 6°.
Where Bayfield’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 Bayfield’s center.
- Snow: Bayfield 6 N, WI.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Bayfield 6 N, WI, 6 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 Bayfield’s climate
What is the weather like in Bayfield?
A typical July afternoon reaches 77°, a January night drops to 6°, and about 106 inches of snow falls in a normal winter. Colder January nights than 98% of U.S. towns; cooler July afternoons than 97% of U.S. towns.
How cold does it get in Bayfield in winter?
January nights average 6°. About 177 nights a year reach 32° or below and 25 reach 0° or below. In the coldest January of the last 30 years the month averaged 2°.
How much snow does Bayfield get?
About 106 inches in a normal winter at Bayfield 6 N, WI, most of it in January, with snow on the ground about 134 days a year.
How hot does it get in Bayfield?
July, with a typical high of 77° and a low of 55°. About 2 days a year reach 90° (Bayfield 6 N, WI).
When is the first and last frost in Bayfield?
In half of years the last spring frost (32°) comes by May 20 and the first fall frost by October 8, about 141 frost-free days, at Bayfield 6 N, WI.
What growing zone is Bayfield in?
Zone 5a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −18°.
What is the best time of year to visit Bayfield?
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 Bayfield getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 63% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Bayfield.
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.