Photo: Wilsonia · CC BY-SA 4.0Wilsonia gets about 186 inches of snow a winter, more than all but 25 U.S. towns
Midsummer highs settle at about 79°. Expect the heaviest rain or snow in January and the lightest in August. Its July afternoons stay fresher than in 95% of U.S. towns. Seedlings are safe outdoors from about June 1, with the first autumn frost due around October 7.
A year in Wilsonia at a glance
Each month’s typical high and low, and what it brings.
What stands out about Wilsonia’s climate
Compared with towns across the U.S., with Wilsonia’s place in California beside it.
What a year in Wilsonia feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 132 frost-free days a year
In half of years the last 32° night comes by June 1 and the first by October 7. Frost and day counts come from NOAA’s station at Grant Grove, CA, 0.4 miles from the town’s center, at about the same height.
The 2023 USDA map puts Wilsonia’s center in zone 7b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 8°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
About 186 inches of snow a winter
Snow, measured at Grant Grove, CA, falls mostly in February. Precipitation (rain plus melted snow) adds up to 42 inches a year; January is the wettest month and August the driest. Rain or snow falls on about 64 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Wilsonia
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 Grant Grove, CA.
Living with Wilsonia’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
132 frost-free days in zone 7b. The last frost comes by Jun 1 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: June, July, August and September. 0.5 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Wilsonia from natural hazards, river flooding is the largest share (37%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Wilsonia and similar climates
TownRatings has no climate map of the towns around Wilsonia yet.
Climates most like Wilsonia’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 |
|---|---|---|---|---|
| Wilsonia, CA | 26° | 79° | 42" | 186" |
| Hanover, NY | 17° | 80° | 42" | 208" |
| North Madison, OH | 22° | 80° | 41" | 114" |
| Incline Village, NV | 22° | 73° | 38" | 179" |
| Summit Park, UT | 19° | 79° | 30" | 153" |
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Wilsonia averaged 1.6° warmer than the 1900s. The biggest change is in September (+2.4°).
A bigger shift than in 64% 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 Wilsonia compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Wilsonia’s place among California’s.
Wilsonia weather by month
Highs, lows and precipitation from NOAA’s grid at Wilsonia’s center; snow, wet days and snow on the ground from Grant Grove, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 46° | 26° | 7.9" | 37.7" | 9 | 25 | 32° – 43° |
| February | 46° | 25° | 7.6" | 44.8" | 11 | 26 | 30° – 43° |
| March | 49° | 27° | 6.8" | 35.1" | 10 | 29 | 29° – 46° |
| April | 53° | 30° | 3.9" | 20.0" | 8 | 20 | 36° – 47° |
| May | 61° | 38° | 1.9" | 4.9" | 5 | 7 | 39° – 57° |
| June | 71° | 45° | 0.5" | 0.6" | 2 | 1 | 50° – 62° |
| July | 79° | 52° | 0.2" | 0.0" | 1 | 0 | 62° – 69° |
| August | 79° | 52° | 0.1" | 0.0" | 1 | 0 | 62° – 68° |
| September | 73° | 47° | 0.4" | 0.0" | 2 | 0 | 55° – 64° |
| October | 63° | 38° | 2.2" | 3.5" | 4 | 2 | 46° – 57° |
| November | 52° | 31° | 3.4" | 8.6" | 6 | 10 | 32° – 48° |
| December | 45° | 25° | 6.6" | 30.8" | 8 | 21 | 31° – 41° |
| Year | 60° | 36° | 41.5" | 186.0" | 64 | 140 |
How much a month can swing
A normal is an average. May swings the most: from 1991 to 2020 its average ranged from 39° to 57°. August is the most reliable, staying within 7°.
Where Wilsonia’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 Wilsonia’s center.
- Snow: Grant Grove, CA (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Grant Grove, CA, 0.4 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 Wilsonia’s climate
What is the weather like in Wilsonia?
A typical July afternoon reaches 79°, a January night drops to 26°, and about 186 inches of snow falls in a normal winter. Milder January nights than 64% of U.S. towns; cooler July afternoons than 95% of U.S. towns.
How cold does it get in Wilsonia in winter?
February nights average 25°. About 137 nights a year reach 32° or below. In the coldest February of the last 30 years the month averaged 30°.
How much snow does Wilsonia get?
About 186 inches in a normal winter at Grant Grove, CA, most of it in February, with snow on the ground about 140 days a year.
How hot does it get in Wilsonia?
July, with a typical high of 79°. 90° days are rare: none in a normal year at Grant Grove, CA.
When is the first and last frost in Wilsonia?
In half of years the last spring frost (32°) comes by June 1 and the first fall frost by October 7, about 132 frost-free days, at Grant Grove, CA.
What growing zone is Wilsonia in?
Zone 7b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 8°.
What is the best time of year to visit Wilsonia?
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 Wilsonia getting warmer?
Yes: 1991–2020 averaged 1.6° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 64% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Wilsonia.
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.