Red Schoolhouse, Old · Photo: Steven L. Driskell (SDriskell) · CC BY-SA 3.0Afternoon heat in Trinity beats that of 94% of U.S. towns
Midwinter brings lows of about 39°. Its January nights stay gentler than in 87% of U.S. towns. Compared with 1901–2000, the average now sits 0.8° higher. The outdoor season runs from February to April and October to November, with highs of 65–81°.
A year in Trinity at a glance
Each month’s typical high and low, and what it brings.
What stands out about Trinity’s climate
Compared with towns across the U.S., with Trinity’s place in Texas beside it.
What a year in Trinity feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 272 frost-free days a year
In half of years the last 32° night comes by March 1 and the first by November 28. Frost and day counts come from NOAA’s station at Huntsville, TX, 19 miles from the town’s center, 290 ft higher.
The 2023 USDA map puts Trinity’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 21°. 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 49 inches of rain a year
October is the wettest month and July the driest. Rain falls on about 93 days a year. Snow is rare: about 0.0" in a normal year at Huntsville, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Trinity
44% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Huntsville, TX.
Living with Trinity’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
272 frost-free days in zone 9a. The last frost comes by Mar 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 Nov 28.
Months with highs of 62–84° and lows of 40° or more: February, March, April, October and November.
Parks & trails →Cold waves are 35% of the yearly building losses FEMA expects in Trinity from natural hazards, the largest share. Normals are averages; the hazards page covers the extremes.
Natural hazards →Trinity and similar climates
TownRatings has no climate map of the towns around Trinity yet.
Climates most like Trinity’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, TX | 39° | 94° | 49" | 0.0" |
| Jesup, GA | 39° | 93° | 49" | 0.0" |
| Moncks Corner, SC | 37° | 93° | 50" | 0.0" |
| Red Chute, LA | 37° | 93° | 53" | 0.1" |
| Macclenny, FL | 41° | 92° | 52" | 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 averaged 0.8° warmer than the 1900s. The biggest change is in March (+1.8°).
A smaller shift than in 91% 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 compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Trinity’s place among Texas’.
Trinity weather by month
Highs, lows and precipitation from NOAA’s grid at Trinity’s center; snow, wet days and snow on the ground from Huntsville, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 61° | 39° | 4.2" | 0.0" | 9 | 0 | 45° – 56° |
| February | 65° | 43° | 3.5" | 0.0" | 9 | 0 | 45° – 62° |
| March | 72° | 50° | 3.8" | 0.0" | 8 | 0 | 54° – 68° |
| April | 79° | 56° | 3.8" | 0.0" | 7 | 0 | 62° – 72° |
| May | 85° | 64° | 4.7" | 0.0" | 8 | 0 | 71° – 79° |
| June | 91° | 71° | 4.7" | 0.0" | 9 | 0 | 79° – 86° |
| July | 94° | 73° | 3.1" | 0.0" | 7 | 0 | 81° – 88° |
| August | 95° | 73° | 3.5" | 0.0" | 7 | 0 | 80° – 90° |
| September | 90° | 67° | 3.9" | 0.0" | 7 | 0 | 76° – 83° |
| October | 81° | 57° | 4.8" | 0.0" | 7 | 0 | 65° – 75° |
| November | 70° | 48° | 4.3" | 0.0" | 7 | 0 | 53° – 64° |
| December | 62° | 41° | 4.7" | 0.0" | 9 | 0 | 44° – 56° |
| Year | 79° | 57° | 48.8" | 0.0" | 93 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 45° to 62°. June is the most reliable, staying within 7°.
Where Trinity’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’s center.
- Snow: Huntsville, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Huntsville, TX, 19 miles from the town’s center, 290 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 Trinity’s climate
What is the weather like in Trinity?
A typical July afternoon reaches 94°, a January night drops to 39°, and snow is almost unheard of. Milder January nights than 87% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Trinity in winter?
January nights average 39°. About 17 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 45°.
How much snow does Trinity get?
About 0.0 inches in a normal winter at Huntsville, TX, so most winters see none.
How hot does it get in Trinity?
July, with a typical high of 94° and a low of 73°. About 96 days a year reach 90° and 6 reach 100° (Huntsville, TX).
When is the first and last frost in Trinity?
In half of years the last spring frost (32°) comes by March 1 and the first fall frost by November 28, about 272 frost-free days, at Huntsville, TX.
What growing zone is Trinity in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 21°.
What is the best time of year to visit Trinity?
By one simple rule (highs of 62–84° and lows of 40° or more), February, March, April, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Trinity getting warmer?
Yes: 1991–2020 averaged 0.8° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 91% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Trinity.
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.