Photo: Michael Barera · CC BY-SA 4.0Sulphur Springs reaches 100° on about 14 days a year, more than 93% of U.S. towns
The depth of winter brings overnight lows near 34°. A year here swings 60° from midwinter lows to midsummer highs. In January, nights here are milder than in 79% of U.S. towns. Long walks are most pleasant from March to May and October to November, when afternoons reach 66–82°.
A year in Sulphur Springs at a glance
Each month’s typical high and low, and what it brings.
What stands out about Sulphur Springs’ climate
Compared with towns across the U.S., with Sulphur Springs’ place in Texas beside it.
What a year in Sulphur Springs feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 245 frost-free days a year
In half of years the last 32° night comes by March 15 and the first by November 14. Frost and day counts come from NOAA’s station at Sulphur Springs, TX, 0.8 miles from the town’s center, at about the same height.
The 2023 USDA map puts Sulphur Springs’ 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 2 inches of snow a winter
Snow, measured at Mt Vernon, TX, falls mostly in February. Precipitation (rain plus melted snow) adds up to 45 inches a year; October is the wettest month and August the driest. Rain or snow falls on about 90 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Sulphur Springs
50% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from November 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 Sulphur Springs, TX.
Living with Sulphur Springs’ climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
245 frost-free days in zone 8b. The last frost comes by Mar 15 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 14.
Months with highs of 62–84° and lows of 40° or more: March, April, May, October and November. 9.8 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Sulphur Springs from natural hazards, tornadoes are the largest share (33%); heat waves, cold waves, winter storms and ice storms together are 34%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Sulphur Springs and similar climates
TownRatings has no climate map of the towns around Sulphur Springs yet.
Climates most like Sulphur Springs’, 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 |
|---|---|---|---|---|
| Sulphur Springs, TX | 34° | 94° | 45" | 1.6" |
| Cayce, SC | 35° | 93° | 46" | 1.2" |
| Milledgeville, GA | 34° | 93° | 47" | 0.6" |
| Laurinburg, NC | 33° | 91° | 45" | 1.1" |
| Clearlake, CA | 35° | 93° | 40" | 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 Sulphur Springs averaged 0.9° warmer than the 1900s. The biggest change is in March (+2.0°).
A smaller shift than in 85% 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 Sulphur Springs compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Sulphur Springs’ place among Texas’.
Sulphur Springs weather by month
Highs, lows and precipitation from NOAA’s grid at Sulphur Springs’ center; snow, wet days and snow on the ground from Mt Vernon, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 55° | 34° | 3.2" | 0.5" | 8 | 0 | 41° – 51° |
| February | 59° | 38° | 3.6" | 0.9" | 8 | 1 | 40° – 57° |
| March | 67° | 46° | 4.3" | 0.1" | 9 | 0 | 51° – 64° |
| April | 75° | 52° | 4.1" | 0.0" | 8 | 0 | 58° – 70° |
| May | 82° | 61° | 4.7" | 0.0" | 9 | 0 | 68° – 77° |
| June | 89° | 69° | 4.0" | 0.0" | 8 | 0 | 76° – 84° |
| July | 94° | 73° | 2.8" | 0.0" | 6 | 0 | 79° – 89° |
| August | 94° | 72° | 2.7" | 0.0" | 6 | 0 | 77° – 91° |
| September | 88° | 65° | 3.3" | 0.0" | 6 | 0 | 72° – 83° |
| October | 78° | 54° | 4.8" | 0.0" | 7 | 0 | 61° – 72° |
| November | 66° | 44° | 3.7" | 0.0" | 7 | 0 | 48° – 61° |
| December | 57° | 36° | 4.2" | 0.1" | 8 | 0 | 38° – 52° |
| Year | 75° | 54° | 45.2" | 1.6" | 90 | 1 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 40° to 57°. June is the most reliable, staying within 8°.
Where Sulphur Springs’ 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 Sulphur Springs’ center.
- Snow: Mt Vernon, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Sulphur Springs, TX, 0.8 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 Sulphur Springs’ climate
What is the weather like in Sulphur Springs?
A typical July afternoon reaches 94°, a January night drops to 34°, and about 2 inches of snow falls in a normal winter. Milder January nights than 79% of U.S. towns; hotter July afternoons than 92% of U.S. towns.
How cold does it get in Sulphur Springs in winter?
January nights average 34°. About 49 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 41°.
How much snow does Sulphur Springs get?
About 1.6 inches in a normal winter at Mt Vernon, TX, most of it in February, with snow on the ground about 1 days a year.
How hot does it get in Sulphur Springs?
July, with a typical high of 94° and a low of 73°. About 94 days a year reach 90° and 14 reach 100° (Sulphur Springs, TX).
When is the first and last frost in Sulphur Springs?
In half of years the last spring frost (32°) comes by March 15 and the first fall frost by November 14, about 245 frost-free days, at Sulphur Springs, TX.
What growing zone is Sulphur Springs 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 Sulphur Springs?
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 Sulphur Springs getting warmer?
Yes: 1991–2020 averaged 0.9° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 85% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Sulphur Springs.
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.