Tustin has cold, snowy winters and pleasant summers
A typical July afternoon reaches 82°, a January night drops to 9°, and about 49 inches of snow falls in a normal winter.
A year in Tustin at a glance
Each month’s typical high and low, and what it brings.
What a year in Tustin feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
49 inches of snow, 33 of rain and melt
June is the wettest month and February the driest. Rain or snow falls on about 109 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
About 151 frost-free days a year
In half of years the last 32° night comes by May 8 and the first by October 6.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
Living with Tustin’s climate
What the numbers mean for a garden, a driveway, a furnace and a free afternoon.
151 frost-free days. The last frost comes by May 8 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 6.
About 49" a winter over 18 days with an inch or more, most in December. Snow covers the ground about 98 days a year.
Months averaging under 55° run from October through April. Heating is 94% of the year’s heating-and-cooling load.
About 8 days a year reach 90°, and July afternoons average 82°.
The nicest months are May, June, July, August and September.
Parks & trails →Normals are averages. Ice storms, nor’easters, floods and heat waves are on the natural hazards page.
Natural hazards →Tustin and its neighbors
Bloomfield has the coldest January nights next door (9°) and Bloomfield the hottest July afternoons (82°). Tap a town to see its climate.
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 Tustin averaged 1.6° warmer than the 1900s. The biggest change is in December (+3.2°).
A bigger shift than in 73% of U.S. towns.
Change by month
How Tustin compares
Against every U.S. town on TownTapestry, each counted once, with its place in Wisconsin.
Tustin weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 25° | 9° | 1.2" | 10.9" | 9 | 28 | 6° – 29° |
| February | 30° | 12° | 1.0" | 11.9" | 7 | 27 | 10° – 31° |
| March | 42° | 23° | 1.9" | 7.0" | 7 | 17 | 23° – 47° |
| April | 56° | 33° | 3.2" | 4.7" | 10 | 3 | 35° – 51° |
| May | 69° | 45° | 3.9" | 0.1" | 12 | 0 | 50° – 64° |
| June | 78° | 55° | 4.6" | 0 | 11 | 0 | 63° – 71° |
| July | 82° | 60° | 3.7" | 0 | 10 | 0 | 65° – 77° |
| August | 80° | 58° | 3.6" | 0 | 10 | 0 | 64° – 73° |
| September | 72° | 50° | 3.4" | 0 | 10 | 0 | 54° – 66° |
| October | 59° | 38° | 2.7" | 0.3" | 9 | 0 | 44° – 55° |
| November | 43° | 27° | 1.9" | 2.1" | 7 | 3 | 26° – 44° |
| December | 31° | 16° | 1.6" | 12.3" | 8 | 19 | 11° – 34° |
| Year | 55° | 35° | 32.7" | 49.3" | 109 | 98 |
Heating and cooling a home in Tustin
94% of the work is heating, so the furnace matters far more than the air conditioner.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. Source: NOAA station normals.
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 23° to 47°. June is the most reliable, staying within 9°.
Common questions about Tustin’s climate
What is the coldest month in Tustin?
January, with a typical high of 25° and a low of 9°.
What is the hottest month in Tustin?
July, with a typical high of 82° and a low of 60°. About 8 days a year reach 90°.
How much snow does Tustin get?
About 49 inches in a normal winter, most of it in December.
When is the first frost in Tustin?
In half of years the first 32° night comes by October 6, and the last spring frost by May 8.
What is the rainiest month in Tustin?
June, with 4.6 inches of rain and melted snow. The year totals 33 inches.
Neighbors talk weather
Gardens, snow, and the best days of the year in Tustin.
Your answer becomes a post in Town Square.
Temperatures and rainfall come from NOAA’s gridded climate normals for Tustin itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Waupaca, WI (15 mi) away. Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Today’s forecast: National Weather Service.