Cushing Land Agency Building · Photo: McGhiever · CC BY-SA 3.0St. Croix Falls has some of the coldest winter nights among U.S. towns
July afternoons average 81°. Summers stay cool: July afternoons here are cooler than in 89% of U.S. towns. Decade by decade the climate has edged up, 1.7° above 1901–2000. The outdoor season runs from May to September, with highs of 68–81°.
A year in St. Croix Falls at a glance
Each month’s typical high and low, and what it brings.
What stands out about St. Croix Falls’ climate
Compared with towns across the U.S., with St. Croix Falls’ place in Wisconsin beside it.
What a year in St. Croix Falls feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 156 frost-free days a year
In half of years the last 32° night comes by May 4 and the first by October 8. Frost and day counts come from NOAA’s station at St Croix Falls, WI, 1.1 miles from the town’s center, 280 ft lower.
The 2023 USDA map puts St. Croix Falls’ center in zone 4b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −24°. 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 43 inches of snow a winter
Snow, measured at St Croix Falls, WI, falls mostly in December. Precipitation (rain plus melted snow) adds up to 33 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 96 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in St. Croix Falls
93% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at St Croix Falls, WI.
Living with St. Croix Falls’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
156 frost-free days in zone 4b. The last frost comes by May 4 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: May, June, July, August and September. 14 miles of trails are waiting.
Parks & trails →Cold waves are 34% of the yearly building losses FEMA expects in St. Croix Falls from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →St. Croix Falls and its neighbors
Taylors Falls the hottest July afternoons (82°, 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 St. Croix Falls’, 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 |
|---|---|---|---|---|
| St. Croix Falls, WI | 5° | 81° | 33" | 43" |
| Clear Lake, IA | 7° | 82° | 36" | 44" |
| Fairmont, MN | 7° | 83° | 32" | 47" |
| Peru, NY | 9° | 80° | 35" | 50" |
| Iron Mountain, MI | 5° | 80° | 29" | 61" |
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 St. Croix Falls averaged 1.7° warmer than the 1900s. The biggest change is in December (+3.9°).
A bigger shift than in 72% 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 St. Croix Falls compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with St. Croix Falls’ place among Wisconsin’s.
St. Croix Falls weather by month
Highs, lows and precipitation from NOAA’s grid at St. Croix Falls’ center; snow, wet days and snow on the ground from St Croix Falls, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 22° | 5° | 0.8" | 7.7" | 6 | 28 | 1° – 27° |
| February | 27° | 8° | 1.0" | 9.6" | 5 | 26 | 5° – 31° |
| March | 40° | 20° | 1.6" | 5.7" | 6 | 17 | 21° – 44° |
| April | 55° | 33° | 2.8" | 1.2" | 8 | 3 | 33° – 51° |
| May | 68° | 45° | 4.1" | 0.0" | 11 | 0 | 51° – 63° |
| June | 77° | 55° | 4.5" | 0.0" | 11 | 0 | 62° – 70° |
| July | 81° | 60° | 4.4" | 0.0" | 10 | 0 | 63° – 75° |
| August | 78° | 58° | 4.2" | 0.0" | 9 | 0 | 63° – 71° |
| September | 70° | 50° | 3.5" | 0.0" | 9 | 0 | 52° – 65° |
| October | 56° | 37° | 3.1" | 0.8" | 9 | 0 | 40° – 52° |
| November | 40° | 24° | 1.7" | 6.7" | 6 | 5 | 22° – 43° |
| December | 27° | 12° | 1.2" | 10.9" | 7 | 22 | 5° – 30° |
| Year | 53° | 34° | 32.7" | 42.6" | 96 | 101 |
How much a month can swing
A normal is an average. January swings the most: from 1991 to 2020 its average ranged from 1° to 27°. June is the most reliable, staying within 8°.
Where St. Croix Falls’ 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 St. Croix Falls’ center.
- Snow: St Croix Falls, WI (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: St Croix Falls, WI, 1.1 miles from the town’s center, 280 ft lower; 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 St. Croix Falls’ climate
What is the weather like in St. Croix Falls?
A typical July afternoon reaches 81°, a January night drops to 5°, and about 43 inches of snow falls in a normal winter. Colder January nights than all but 181 U.S. towns; cooler July afternoons than 89% of U.S. towns.
How cold does it get in St. Croix Falls in winter?
January nights average 5°. About 169 nights a year reach 32° or below and 37 reach 0° or below. In the coldest January of the last 30 years the month averaged 1°.
How much snow does St. Croix Falls get?
About 43 inches in a normal winter at St Croix Falls, WI, most of it in December, with snow on the ground about 101 days a year.
How hot does it get in St. Croix Falls?
July, with a typical high of 81° and a low of 60°. About 11 days a year reach 90° (St Croix Falls, WI).
When is the first and last frost in St. Croix Falls?
In half of years the last spring frost (32°) comes by May 4 and the first fall frost by October 8, about 156 frost-free days, at St Croix Falls, WI.
What growing zone is St. Croix Falls in?
Zone 4b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −24°.
What is the best time of year to visit St. Croix Falls?
By one simple rule (highs of 62–84° and lows of 40° or more), May, June, July, August and September. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is St. Croix Falls getting warmer?
Yes: 1991–2020 averaged 1.7° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 72% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in St. Croix Falls.
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.