Tomball has warmer summer afternoons than 94% of U.S. towns
Midwinter brings lows of about 42°. Winters are mild: January nights here are milder than in 91% of U.S. towns. The latest 30-year average runs 1.4° warmer than 1901–2000’s, with February up the most. For walks and days out, the stretch from October to April brings highs of 63–82°.
A year in Tomball at a glance
Each month’s typical high and low, and what it brings.
What stands out about Tomball’s climate
Compared with towns across the U.S., with Tomball’s place in Texas beside it.
What a year in Tomball feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 290 frost-free days a year
In half of years the last 32° night comes by February 19 and the first by December 3. Frost and day counts come from NOAA’s station at Houston Hooks Mem Airport, 4 miles from the town’s center, at about the same height.
The 2023 USDA map puts Tomball’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 51 inches of rain a year
May is the wettest month and February the driest. Rain falls on about 76 days a year. Snow is rare: about 0.0" in a normal year at Tomball, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Tomball
30% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Houston Hooks Mem Airport.
Living with Tomball’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
290 frost-free days in zone 9a. The last frost comes by Feb 19 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 3.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, October, November and December. 5.1 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Tomball from natural hazards, river flooding is the largest share (39%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Tomball and its neighbors
Every town next door is within a degree of Tomball in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Tomball’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 |
|---|---|---|---|---|
| Tomball, TX | 42° | 94° | 51" | 0.0" |
| Hinesville, GA | 40° | 93° | 49" | 0.0" |
| Macclenny, FL | 41° | 92° | 52" | 0.0" |
| Shreveport, LA | 37° | 94° | 52" | 0.1" |
| Paradise, CA | 40° | 93° | 57" | 0.1" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Tomball averaged 1.4° warmer than the 1900s. The biggest change is in February (+2.5°).
A bigger shift than in 53% 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 Tomball compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Tomball’s place among Texas’.
Tomball weather by month
Highs, lows and precipitation from NOAA’s grid at Tomball’s center; snow, wet days and snow on the ground from Tomball, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 63° | 42° | 4.0" | 0.0" | 8 | 0 | 48° – 59° |
| February | 67° | 46° | 3.1" | 0.0" | 6 | 0 | 47° – 66° |
| March | 73° | 52° | 3.6" | 0.0" | 6 | 0 | 56° – 70° |
| April | 80° | 58° | 4.0" | 0.0" | 5 | 0 | 63° – 73° |
| May | 86° | 66° | 5.2" | 0.0" | 6 | 0 | 72° – 80° |
| June | 92° | 72° | 5.0" | 0.0" | 7 | 0 | 79° – 86° |
| July | 94° | 74° | 4.1" | 0.0" | 7 | 0 | 81° – 88° |
| August | 95° | 74° | 4.6" | 0.0" | 7 | 0 | 80° – 90° |
| September | 90° | 69° | 4.5" | 0.0" | 6 | 0 | 76° – 84° |
| October | 82° | 59° | 5.1" | 0.0" | 5 | 0 | 67° – 76° |
| November | 72° | 50° | 4.1" | 0.0" | 6 | 0 | 56° – 67° |
| December | 64° | 44° | 4.0" | 0.0" | 7 | 0 | 47° – 59° |
| Year | 80° | 59° | 51.3" | 0.0" | 76 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 47° to 66°. June is the most reliable, staying within 6°.
Where Tomball’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 Tomball’s center.
- Snow: Tomball, TX (NOAA station in town).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Houston Hooks Mem Airport, 4 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 Tomball’s climate
What is the weather like in Tomball?
A typical July afternoon reaches 94°, a January night drops to 42°, and snow is almost unheard of. Milder January nights than 91% of U.S. towns; hotter July afternoons than 94% of U.S. towns.
How cold does it get in Tomball in winter?
January nights average 42°. About 14 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 48°.
How much snow does Tomball get?
About 0.0 inches in a normal winter at Tomball, TX, so most winters see none.
How hot does it get in Tomball?
July, with a typical high of 94° and a low of 74°. About 111 days a year reach 90° and 8 reach 100° (Houston Hooks Mem Airport).
When is the first and last frost in Tomball?
In half of years the last spring frost (32°) comes by February 19 and the first fall frost by December 3, about 290 frost-free days, at Houston Hooks Mem Airport.
What growing zone is Tomball 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 Tomball?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Tomball getting warmer?
Yes: 1991–2020 averaged 1.4° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 53% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Tomball.
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.