Stonyford reaches 100° on about 15 days a year, more than 93% of U.S. towns
In January the night’s low is typically 34°. By precipitation alone, it ranks drier than 87% of U.S. towns. Decade by decade the climate has edged up, 1.2° above 1901–2000. Keep the boiler serviced for the months from December to February, which average under 50°.
A year in Stonyford at a glance
Each month’s typical high and low, and what it brings.
What stands out about Stonyford’s climate
Compared with towns across the U.S., with Stonyford’s place in California beside it.
What a year in Stonyford feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 219 frost-free days a year
In half of years the last 32° night comes by April 6 and the first by November 10. Frost and day counts come from NOAA’s station at East Park Reservoir, CA, 1.6 miles from the town’s center, at about the same height.
The 2023 USDA map puts Stonyford’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 20°. 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 25 inches of rain a year
January is the wettest month and July the driest. Rain falls on about 50 days a year. Snow is rare: about 0.5" in a normal year at Stonyford, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Stonyford
73% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at East Park Reservoir, CA.
Living with Stonyford’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
219 frost-free days in zone 9a. The last frost comes by Apr 6 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 10.
Months with highs of 62–84° and lows of 40° or more: April, May and October.
Parks & trails →Of the yearly building losses FEMA expects in Stonyford from natural hazards, drought is the largest share (72%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Stonyford and similar climates
TownRatings has no climate map of the towns around Stonyford yet.
Climates most like Stonyford’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 |
|---|---|---|---|---|
| Stonyford, CA | 34° | 96° | 25" | 0.5" |
| Brady, TX | 35° | 95° | 27" | 0.3" |
| Altus, OK | 28° | 97° | 28" | 2.8" |
| Central Point, OR | 32° | 93° | 22" | 3.4" |
| Sedona, AZ | 30° | 97° | 17" | 1.0" |
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 Stonyford averaged 1.2° warmer than the 1900s. The biggest change is in January (+2.7°).
A smaller 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 Stonyford compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Stonyford’s place among California’s.
Stonyford weather by month
Highs, lows and precipitation from NOAA’s grid at Stonyford’s center; snow, wet days and snow on the ground from Stonyford, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 57° | 34° | 5.4" | 0.3" | 9 | 0 | 42° – 52° |
| February | 59° | 36° | 5.1" | 0.2" | 9 | 0 | 42° – 54° |
| March | 64° | 38° | 3.4" | 0.0" | 6 | 0 | 43° – 58° |
| April | 69° | 42° | 1.4" | 0.0" | 5 | 0 | 49° – 60° |
| May | 79° | 48° | 1.0" | 0.0" | 3 | 0 | 55° – 70° |
| June | 88° | 54° | 0.4" | 0.0" | 2 | 0 | 65° – 77° |
| July | 96° | 60° | 0.0" | 0.0" | 0 | 0 | 74° – 81° |
| August | 94° | 58° | 0.1" | 0.0" | 0 | 0 | 73° – 81° |
| September | 89° | 53° | 0.1" | 0.0" | 0 | 0 | 67° – 74° |
| October | 78° | 45° | 1.0" | 0.0" | 3 | 0 | 58° – 68° |
| November | 64° | 38° | 2.4" | 0.0" | 6 | 0 | 43° – 56° |
| December | 56° | 34° | 4.6" | 0.0" | 8 | 0 | 40° – 49° |
| Year | 74° | 45° | 24.9" | 0.5" | 50 | 0 |
How much a month can swing
A normal is an average. May swings the most: from 1991 to 2020 its average ranged from 55° to 70°. September is the most reliable, staying within 8°.
Where Stonyford’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 Stonyford’s center.
- Snow: Stonyford, CA (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: East Park Reservoir, CA, 1.6 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 Stonyford’s climate
What is the weather like in Stonyford?
A typical July afternoon reaches 96°, a January night drops to 34°, and snow is almost unheard of. Milder January nights than 79% of U.S. towns; hotter July afternoons than 96% of U.S. towns.
How cold does it get in Stonyford in winter?
December nights average 34°. About 60 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 40°.
How much snow does Stonyford get?
About 0.5 inches in a normal winter at Stonyford, CA, so most winters see none.
How hot does it get in Stonyford?
July, with a typical high of 96° and a low of 60°. About 81 days a year reach 90° and 15 reach 100° (East Park Reservoir, CA).
When is the first and last frost in Stonyford?
In half of years the last spring frost (32°) comes by April 6 and the first fall frost by November 10, about 219 frost-free days, at East Park Reservoir, CA.
What growing zone is Stonyford in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 20°.
What is the best time of year to visit Stonyford?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Stonyford getting warmer?
Yes: 1991–2020 averaged 1.2° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 64% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Stonyford.
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.