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Climate in Cold Spring · NOAA 1991–2020 normals

Cold Spring’s winters are colder and snowier than most of the U.S.

A typical July afternoon reaches 83°, a January night drops to 12°, and about 34 inches of snow falls in a normal winter.

Colder January nights than 91% of U.S. towns#267 coldest of 378 in WI
More snow than 67% of U.S. towns#367Snowiest  of 378 in WI
All WI rankings →

A year in Cold Spring at a glance

Each month’s typical high and low, and what it brings.

Jan28°12° 9" snow
Feb32°16° 10" snow
Mar44°25° 4" snow
Apr57°36°
May69°47° Last frost ~May 2
Jun79°57° 2 days 90°+Wettest
Jul83°61° 3 days 90°+
Aug81°59° 2 days 90°+
Sep74°52° 1 day 90°+
Oct61°40° First frost ~Oct 9
Nov now46°29°
Dec33°18° 9" snow

What stands out about Cold Spring’s climate

Compared with towns across the U.S., with Cold Spring’s place in Wisconsin beside it.

A normal year

What a year in Cold Spring feels like

Typical highs and lows by season and by month, from NOAA’s 30-year normals.

Winter
31° / 15°
12 days with 1"+ of snow
Spring
57° / 36°
Last frost around May 2
Summer
81° / 59°
9 days reach 90°
Fall
60° / 40°
First frost around Oct 9
Best months to be outsideMayJunJulAugSepHighs of 62–84° and lows of 40° or more
Frost, heat & the growing season

About 157 frost-free days a year

In half of years the last 32° night comes by May 2 and the first by October 9. Frost and day counts come from NOAA’s station at Whitewater, WI, 1.9 miles from the town’s center, at about the same height.

152
nights at or below 32° in a normal year
221st most of 378 in Wisconsin
More freezing nights than 86% of U.S. towns
18
nights at or below 0°
223rd most of 378 in Wisconsin
More nights at or below 0° than 92% of U.S. towns
9
days that reach 90°
247th fewest of 378 in Wisconsin
Fewer 90° days than 79% of U.S. towns
<1
days that reach 100°
Fewer 100° days than 56% of U.S. towns
5bUSDA zone
Plant hardiness zone 5b

The 2023 USDA map puts Cold Spring’s center in zone 5b: the coldest night of a typical winter, averaged over 1991–2020, reaches about −14°. Plant labels use the zone; frost dates tell you when to plant.

Freezing nights by month

Average nights at or below 32°

30
JFMAMJJASOND

90° days by month

Average days at 90° or more

3.3
JFMAMJJASOND
Rain & snow

About 34 inches of snow a winter

Snow, measured at Whitewater, WI, falls mostly in February and December. Precipitation (rain plus melted snow) adds up to 36 inches a year; June is the wettest month and February the driest. Rain or snow falls on about 128 days a year.

36"
Rain + melted snow a year
295th driest of 378 in Wisconsin
Drier than 73% of U.S. towns
34"
Snow in a normal winter
367th snowiest of 378 in Wisconsin
More snow than 67% of U.S. towns
62 days
With 1"+ of snow on the ground
265th most of 352 in Wisconsin
More days with snow on the ground than 82% of U.S. towns

Rain + melted snow by month

Inches of water

5.1"
JFMAMJJASOND

Snowfall by month

Inches of snow

10"
JFMAMJJASOND
Heating & cooling

Heating and cooling a home in Cold Spring

92% of the work is heating, so the furnace matters far more than the air conditioner. Months averaging under 55° run from October through April.

7,158 heating degree daysMore heating than 89% of U.S. towns
621 cooling degree daysLess cooling than 76% of U.S. towns

Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Whitewater, WI.

Living here

Living with Cold Spring’s climate

What the numbers mean for a garden, a free afternoon and a bad-weather day.

The garden window

157 frost-free days in zone 5b. The last frost comes by May 2 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 9.

Get outside

Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 5.1 miles of trails are waiting.

Parks & trails →
Storms and extremes

Of the yearly building losses FEMA expects in Cold Spring from natural hazards, river flooding is the largest share (44%); heat waves, cold waves, winter storms and ice storms together are 23%. Normals are averages; the hazards page covers the extremes.

Natural hazards →
Next door

Cold Spring and its neighbors

Every town next door is within a degree of Cold Spring in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.

Jefferson: January low 12°, July high 83°Sullivan: January low 12°, July high 82°Whitewater: January low 12°, July high 83°Fort Atkinson: January low 12°, July high 83°Sumner: January low 12°, July high 83°Lima: January low 12°, July high 83°Milton: January low 12°, July high 83°Eagle: January low 13°, July high 82°La Grange: January low 12°, July high 82°Hebron: January low 12°, July high 83°Whitewater: January low 12°, July high 83°Koshkonong: January low 12°, July high 83°Palmyra: January low 13°, July high 83°Cold Spring: January low 12°, July high 83°Cold SpringHebronWhitewaterKoshkonongPalmyra
ColderMilder12° to 13°
Koshkonong12.0° about the same
Cold Spring12.2°
Hebron12.2° about the same
Whitewater12.2° about the same
Palmyra12.5° about the same

Climates most like Cold Spring’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.

TownJan. lowJuly highPrecip.Snow
Cold Spring, WI12°83°36"34"
Grinnell, IA12°84°38"31"
Howell, MI16°82°34"33"
Horseheads, NY16°82°36"42"
Winona, MN8°83°36"38"

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.

Then and now

Warmer than it used to be

The last 30 years in Cold Spring averaged 1.1° warmer than the 1900s. The biggest change is in December (+2.6°).

+1.1°1991–2020 vs. 1901–2000

A smaller shift than in 67% of U.S. towns.

Winter+2.3°now 23°, was 21°
Spring+1.0°now 46°, was 46°
Summer+0.4°now 70°, was 70°
Fall+0.8°now 50°, was 49°

Change by month

JanFebMarAprMayJunJulAugSepOctNovDec

The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.

Compared with other towns

How Cold Spring compares

Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Cold Spring’s place among Wisconsin’s.

Summer heat83° July high
Cooler July afternoons than 75% of U.S. towns319th coolest of 378 in Wisconsin
Winter cold12° January low
Colder January nights than 91% of U.S. towns267th coldest of 378 in Wisconsin
Precipitation36" a year
Drier than 73% of U.S. towns295th driest of 378 in Wisconsin
Snow34" a winter
More snow than 67% of U.S. towns367th snowiest of 378 in Wisconsin
Hot days9 days at 90°+
Fewer 90° days than 79% of U.S. towns247th fewest of 378 in Wisconsin
Freezing nights152 a year
More freezing nights than 86% of U.S. towns221st most of 378 in Wisconsin
Growing season157 frost-free days
A shorter frost-free season than 87% of U.S. towns166th shortest of 377 in Wisconsin
Month by month

Cold Spring weather by month

Highs, lows and precipitation from NOAA’s grid at Cold Spring’s center; snow, wet days and snow on the ground from Whitewater, WI. 1991–2020 normals.

MonthHighLowRain + meltSnowWet daysSnow on ground30-yr range
January28°12°1.6"8.5"102110° – 33°
February32°16°1.5"9.9"91911° – 36°
March44°25°2.0"4.4"9826° – 50°
April57°36°3.6"0.7"12138° – 53°
May69°47°4.2"0.1"14052° – 64°
June79°57°5.1"0.0"12065° – 72°
July83°61°3.9"0.0"10066° – 79°
August81°59°4.1"0.0"11064° – 76°
September74°52°3.5"0.0"11056° – 68°
October61°40°2.9"0.1"12046° – 57°
November46°29°2.2"1.2"9228° – 47°
December33°18°1.8"9.0"101212° – 37°
Year57°38°36.4"33.9"12862
Year to year

How much a month can swing

A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 12° to 37°. June is the most reliable, staying within 8°.

Coldest to warmest month in 30 yearsNormal
Sources

Where Cold Spring’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 Cold Spring’s center.
  • Snow: Whitewater, WI (NOAA station in town).
  • Frost, freezing nights, 90° and 100° days, heating and cooling: Whitewater, WI, 1.9 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 Cold Spring’s climate

What is the weather like in Cold Spring?

A typical July afternoon reaches 83°, a January night drops to 12°, and about 34 inches of snow falls in a normal winter. Colder January nights than 91% of U.S. towns; cooler July afternoons than 75% of U.S. towns.

How cold does it get in Cold Spring in winter?

January nights average 12°. About 152 nights a year reach 32° or below and 18 reach 0° or below. In the coldest January of the last 30 years the month averaged 10°.

How much snow does Cold Spring get?

About 34 inches in a normal winter at Whitewater, WI, most of it in February and December, with snow on the ground about 62 days a year.

How hot does it get in Cold Spring?

July, with a typical high of 83° and a low of 61°. About 9 days a year reach 90° (Whitewater, WI).

When is the first and last frost in Cold Spring?

In half of years the last spring frost (32°) comes by May 2 and the first fall frost by October 9, about 157 frost-free days, at Whitewater, WI.

What growing zone is Cold Spring in?

Zone 5b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −14°.

What is the best time of year to visit Cold Spring?

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 Cold Spring getting warmer?

Yes: 1991–2020 averaged 1.1° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 67% of U.S. towns.

Neighbors talk weather

Gardens, snow, and the best days of the year in Cold Spring.

Town Square →
Ask your neighbors

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.