Bowerman Barn · Photo: NoeHill · CC BY-SA 3.0Trinity Center’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 95°, a January night drops to 32°, and about 6 inches of snow falls in a normal winter.
A year in Trinity Center at a glance
Each month’s typical high and low, and what it brings.
What stands out about Trinity Center’s climate
Compared with towns across the U.S., with Trinity Center’s place in California beside it.
What a year in Trinity Center feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 178 frost-free days a year
In half of years the last 32° night comes by April 23 and the first by October 22. Frost and day counts come from Trinity Rvr Hatchery, CA, 18 miles away.
The 2023 USDA map puts Trinity Center’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 17°. 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 6 inches of snow a winter
Snow, measured at Trinity Rvr Hatchery, CA, falls mostly in December. Precipitation (rain plus melted snow) adds up to 73 inches a year; December is the wettest month and July the driest. Rain or snow falls on about 95 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Trinity Center
83% of the work is heating. Months averaging under 55° run from November 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 Trinity Rvr Hatchery, CA.
Living with Trinity Center’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
178 frost-free days in zone 8b. The last frost comes by Apr 23 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 22.
Months with highs of 62–84° and lows of 40° or more: May and October. 4.6 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Trinity Center from natural hazards, wildfire is the largest share (45%); heat waves, cold waves, winter storms and ice storms together are 1%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Trinity Center and similar climates
TownRatings has no climate map of the towns around Trinity Center yet.
Climates most like Trinity Center’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 |
|---|---|---|---|---|
| Trinity Center, CA | 32° | 95° | 73" | 6.4" |
| Bogalusa, LA | 39° | 92° | 64" | 0.2" |
| Hattiesburg, MS | 38° | 92° | 61" | 0.9" |
| Semmes, AL | 40° | 91° | 65" | 0.2" |
| Crestview, FL | 39° | 92° | 63" | 0.0" |
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 Trinity Center averaged 1.4° warmer than the 1900s. The biggest change is in September (+2.3°).
A bigger shift than in 52% 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 Trinity Center compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Trinity Center’s place among California’s.
Trinity Center weather by month
Highs, lows and precipitation from NOAA’s grid at Trinity Center’s center; snow, wet days and snow on the ground from Trinity Rvr Hatchery, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 50° | 32° | 12.2" | 1.2" | 15 | 0 | 36° – 47° |
| February | 54° | 33° | 12.3" | 1.6" | 12 | 0 | 37° – 50° |
| March | 60° | 35° | 11.1" | 0.3" | 13 | 0 | 40° – 55° |
| April | 66° | 38° | 5.6" | 0.0" | 10 | 0 | 45° – 57° |
| May | 76° | 45° | 3.1" | 0.0" | 8 | 0 | 53° – 68° |
| June | 85° | 51° | 1.3" | 0.0" | 3 | 0 | 62° – 75° |
| July | 95° | 56° | 0.1" | 0.0" | 1 | 0 | 69° – 80° |
| August | 93° | 54° | 0.2" | 0.0" | 1 | 0 | 71° – 78° |
| September | 88° | 49° | 0.7" | 0.0" | 2 | 0 | 65° – 73° |
| October | 74° | 41° | 3.7" | 0.0" | 5 | 0 | 53° – 63° |
| November | 57° | 36° | 8.3" | 0.6" | 11 | 0 | 38° – 52° |
| December | 47° | 32° | 13.9" | 2.7" | 15 | 1 | 37° – 45° |
| Year | 70° | 42° | 72.5" | 6.4" | 95 | 1 |
How much a month can swing
A normal is an average. March swings the most: from 1991 to 2020 its average ranged from 40° to 55°. September is the most reliable, staying within 8°.
Where Trinity Center’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 Trinity Center’s center.
- Snow: Trinity Rvr Hatchery, CA.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Trinity Rvr Hatchery, CA, 18 miles from the town’s center, 780 ft lower; no station nearby passes every check; this is the nearest one in the same valley, flagged above.
- 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 Trinity Center’s climate
What is the weather like in Trinity Center?
A typical July afternoon reaches 95°, a January night drops to 32°, and about 6 inches of snow falls in a normal winter. Milder January nights than 75% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Trinity Center in winter?
December nights average 32°. About 78 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 37°.
How much snow does Trinity Center get?
About 6.4 inches in a normal winter at Trinity Rvr Hatchery, CA, most of it in December, with snow on the ground about 1 days a year.
How hot does it get in Trinity Center?
July, with a typical high of 95° and a low of 56°. About 78 days a year reach 90° and 17 reach 100° (Trinity Rvr Hatchery, CA).
When is the first and last frost in Trinity Center?
In half of years the last spring frost (32°) comes by April 23 and the first fall frost by October 22, about 178 frost-free days, at Trinity Rvr Hatchery, CA.
What growing zone is Trinity Center in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 17°.
What is the best time of year to visit Trinity Center?
By one simple rule (highs of 62–84° and lows of 40° or more), May and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Trinity Center getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 52% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Trinity Center.
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.