Westfield has colder winter nights than 95% of U.S. towns
Peak summer warmth arrives in July, with afternoons near 82°. Summers stay cool: July afternoons here are cooler than in 81% of U.S. towns. Warming shows here too: 1.5° more than in 1901–2000, led by December. Central heating does most of its work from October to April, in months below 50° on average.
A year in Westfield at a glance
Each month’s typical high and low, and what it brings.
What stands out about Westfield’s climate
Compared with towns across the U.S., with Westfield’s place in Wisconsin beside it.
What a year in Westfield 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 2 and the first by October 7. Day counts come from NOAA’s station at Rock Springs 3 Sw, WI, 2.3 miles from the town’s center, 160 ft higher; frost dates and degree days from Reedsburg, WI, 7 miles away.
The 2023 USDA map puts Westfield’s center in zone 5a: the coldest night of a typical winter, averaged over 1991–2020, reaches about −15°. 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 44 inches of snow a winter
Snow, measured at Reedsburg, WI, falls mostly in February. Precipitation (rain plus melted snow) adds up to 38 inches a year; June is the wettest month and January the driest. Rain or snow falls on about 119 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Westfield
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 Reedsburg, WI.
Living with Westfield’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
156 frost-free days in zone 5a. 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 7.
Months with highs of 62–84° and lows of 40° or more: May, June, July, August and September. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Westfield from natural hazards, river flooding is the largest share (66%); heat waves, cold waves, winter storms and ice storms together are 15%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Westfield and its neighbors
Every town next door is within a degree of Westfield in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Westfield’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 |
|---|---|---|---|---|
| Westfield, WI | 9° | 82° | 38" | 44" |
| Mason City, IA | 8° | 82° | 36" | 44" |
| Colchester, VT | 10° | 81° | 38" | 50" |
| Faribault, MN | 6° | 82° | 35" | 43" |
| Plattsburgh, NY | 9° | 81° | 35" | 50" |
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 Westfield averaged 1.5° warmer than the 1900s. The biggest change is in December (+3.3°).
A bigger shift than in 59% 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 Westfield compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Westfield’s place among Wisconsin’s.
Westfield weather by month
Highs, lows and precipitation from NOAA’s grid at Westfield’s center; snow, wet days and snow on the ground from Reedsburg, WI. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 27° | 9° | 1.3" | 9.9" | 8 | 21 | 7° – 31° |
| February | 32° | 13° | 1.3" | 14.8" | 8 | 24 | 9° – 34° |
| March | 44° | 23° | 2.1" | 5.1" | 9 | 10 | 25° – 49° |
| April | 57° | 34° | 4.0" | 2.7" | 12 | 2 | 36° – 51° |
| May | 69° | 46° | 4.4" | 0.0" | 13 | 0 | 52° – 64° |
| June | 78° | 56° | 5.3" | 0.0" | 11 | 0 | 64° – 71° |
| July | 82° | 60° | 4.5" | 0.0" | 9 | 0 | 65° – 78° |
| August | 80° | 58° | 4.4" | 0.0" | 10 | 0 | 64° – 75° |
| September | 73° | 50° | 3.7" | 0.0" | 10 | 0 | 55° – 67° |
| October | 60° | 37° | 2.9" | 0.4" | 11 | 0 | 44° – 55° |
| November | 44° | 27° | 2.1" | 1.7" | 8 | 2 | 27° – 46° |
| December | 32° | 16° | 1.6" | 9.3" | 10 | 14 | 10° – 35° |
| Year | 56° | 36° | 37.6" | 43.9" | 119 | 71 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 9° to 34°. June is the most reliable, staying within 8°.
Where Westfield’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 Westfield’s center.
- Snow: Reedsburg, WI.
- Frost dates, heating and cooling: Reedsburg, WI, 7 miles away.
- Freezing nights, 90° and 100° days: Rock Springs 3 Sw, WI, 2.3 miles from the town’s center, 160 ft higher; 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 Westfield’s climate
What is the weather like in Westfield?
A typical July afternoon reaches 82°, a January night drops to 9°, and about 44 inches of snow falls in a normal winter. Colder January nights than 95% of U.S. towns; cooler July afternoons than 81% of U.S. towns.
How cold does it get in Westfield in winter?
January nights average 9°. About 145 nights a year reach 32° or below and 15 reach 0° or below. In the coldest January of the last 30 years the month averaged 7°.
How much snow does Westfield get?
About 44 inches in a normal winter at Reedsburg, WI, most of it in February, with snow on the ground about 71 days a year.
How hot does it get in Westfield?
July, with a typical high of 82° and a low of 60°. About 2 days a year reach 90° (Reedsburg, WI).
When is the first and last frost in Westfield?
In half of years the last spring frost (32°) comes by May 2 and the first fall frost by October 7, about 156 frost-free days, at Reedsburg, WI.
What growing zone is Westfield in?
Zone 5a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about −15°.
What is the best time of year to visit Westfield?
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 Westfield getting warmer?
Yes: 1991–2020 averaged 1.5° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 59% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Westfield.
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.