Photo: Bobak Ha'Eri · CC BY 3.0Jackson reaches 100° on about 13 days a year, more than 92% of U.S. towns
A typical July afternoon reaches 94°, a January night drops to 38°, and snow is almost unheard of.
A year in Jackson at a glance
Each month’s typical high and low, and what it brings.
What stands out about Jackson’s climate
Compared with towns across the U.S., with Jackson’s place in California beside it.
What a year in Jackson feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 285 frost-free days a year
In half of years the last 32° night comes by March 4 and the first by December 11. Frost and day counts come from NOAA’s station at Sutter Hill Cdf, CA, 2.5 miles from the town’s center, 270 ft higher.
The 2023 USDA map puts Jackson’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 25°. 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 30 inches of rain a year
January is the wettest month and July the driest. Rain falls on about 67 days a year. Snow is rare: about 0.0" in a normal year at Camp Pardee, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Jackson
67% 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 Sutter Hill Cdf, CA.
Living with Jackson’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
285 frost-free days in zone 9a. The last frost comes by Mar 4 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Dec 11.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 0.0 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Jackson from natural hazards, river flooding is the largest share (40%); heat waves, cold waves, winter storms and ice storms together are 4%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Jackson and similar climates
TownRatings has no climate map of the towns around Jackson yet.
Climates most like Jackson’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 |
|---|---|---|---|---|
| Jackson, CA | 38° | 94° | 30" | 0.0" |
| Lakehills, TX | 39° | 94° | 32" | 0.1" |
| Grants Pass, OR | 34° | 90° | 33" | 0.9" |
| Lawton, OK | 29° | 96° | 32" | 1.8" |
| Lugoff, SC | 33° | 92° | 43" | 0.4" |
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 Jackson averaged 1.0° warmer than the 1900s. The biggest change is in January (+1.6°).
A smaller shift than in 80% 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 Jackson compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Jackson’s place among California’s.
Jackson weather by month
Highs, lows and precipitation from NOAA’s grid at Jackson’s center; snow, wet days and snow on the ground from Camp Pardee, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 56° | 38° | 5.5" | 0.0" | 12 | 0 | 42° – 55° |
| February | 59° | 40° | 5.3" | 0.0" | 10 | 0 | 42° – 56° |
| March | 63° | 42° | 4.6" | 0.0" | 10 | 0 | 44° – 60° |
| April | 68° | 44° | 2.8" | 0.0" | 7 | 0 | 51° – 61° |
| May | 77° | 50° | 1.7" | 0.0" | 4 | 0 | 54° – 73° |
| June | 87° | 56° | 0.3" | 0.0" | 1 | 0 | 65° – 77° |
| July | 94° | 61° | 0.0" | 0.0" | 0 | 0 | 74° – 83° |
| August | 93° | 61° | 0.0" | 0.0" | 0 | 0 | 73° – 81° |
| September | 88° | 57° | 0.2" | 0.0" | 1 | 0 | 68° – 77° |
| October | 77° | 50° | 1.6" | 0.0" | 3 | 0 | 60° – 71° |
| November | 64° | 42° | 2.8" | 0.0" | 7 | 0 | 44° – 59° |
| December | 55° | 37° | 5.3" | 0.0" | 11 | 0 | 42° – 51° |
| Year | 73° | 48° | 29.9" | 0.0" | 67 | 0 |
How much a month can swing
A normal is an average. May swings the most: from 1991 to 2020 its average ranged from 54° to 73°. August is the most reliable, staying within 8°.
Where Jackson’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 Jackson’s center.
- Snow: Camp Pardee, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sutter Hill Cdf, CA, 2.5 miles from the town’s center, 270 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 Jackson’s climate
What is the weather like in Jackson?
A typical July afternoon reaches 94°, a January night drops to 38°, and snow is almost unheard of. Milder January nights than 85% of U.S. towns; hotter July afternoons than 93% of U.S. towns.
How cold does it get in Jackson in winter?
December nights average 37°. About 15 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 42°.
How much snow does Jackson get?
About 0.0 inches in a normal winter at Camp Pardee, CA, so most winters see none.
How hot does it get in Jackson?
July, with a typical high of 94° and a low of 61°. About 75 days a year reach 90° and 13 reach 100° (Sutter Hill Cdf, CA).
When is the first and last frost in Jackson?
In half of years the last spring frost (32°) comes by March 4 and the first fall frost by December 11, about 285 frost-free days, at Sutter Hill Cdf, CA.
What growing zone is Jackson in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 25°.
What is the best time of year to visit Jackson?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Jackson getting warmer?
Yes: 1991–2020 averaged 1.0° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 80% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Jackson.
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.