Photo: Jim Evans · CC BY-SA 4.0La Porte’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 91°, a January night drops to 45°, and snow is almost unheard of.
A year in La Porte at a glance
Each month’s typical high and low, and what it brings.
What stands out about La Porte’s climate
Compared with towns across the U.S., with La Porte’s place in Texas beside it.
What a year in La Porte feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
A freeze most winters
Frost and day counts come from NOAA’s station at Houston Hobby Airport, 14 miles from the town’s center, at about the same height.
The 2023 USDA map puts La Porte’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 28°. 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 55 inches of rain a year
June is the wettest month and February the driest. Rain falls on about 86 days a year. Snow is rare: about 0.0" in a normal year at Houston Deer Park, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in La Porte
25% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from 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 Hobby Airport.
Living with La Porte’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 9b. Frost comes about 9 winters in 10, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, October, November and December. 13 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in La Porte from natural hazards, river flooding is the largest share (49%); heat waves, cold waves, winter storms and ice storms together are 10%. Normals are averages; the hazards page covers the extremes.
Natural hazards →La Porte and its neighbors
Every town next door is within a degree of La Porte in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like La Porte’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 |
|---|---|---|---|---|
| La Porte, TX | 45° | 91° | 55" | 0.0" |
| Palatka, FL | 45° | 92° | 53" | 0.0" |
| Morgan City, LA | 44° | 91° | 60" | 0.0" |
| St. Marys, GA | 43° | 91° | 51" | 0.0" |
| Headland, AL | 39° | 91° | 56" | 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 La Porte averaged 1.3° warmer than the 1900s. The biggest change is in February (+2.5°).
A smaller shift than in 51% 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 La Porte compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with La Porte’s place among Texas’.
La Porte weather by month
Highs, lows and precipitation from NOAA’s grid at La Porte’s center; snow, wet days and snow on the ground from Houston Deer Park, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 63° | 45° | 4.4" | 0.0" | 8 | 0 | 48° – 61° |
| February | 66° | 49° | 3.1" | 0.0" | 7 | 0 | 49° – 66° |
| March | 72° | 55° | 3.5" | 0.0" | 7 | 0 | 57° – 71° |
| April | 77° | 61° | 3.9" | 0.0" | 5 | 0 | 64° – 73° |
| May | 84° | 68° | 5.1" | 0.0" | 6 | 0 | 72° – 79° |
| June | 89° | 74° | 5.8" | 0.0" | 10 | 0 | 79° – 84° |
| July | 91° | 76° | 4.5" | 0.0" | 8 | 0 | 81° – 86° |
| August | 92° | 76° | 5.5" | 0.0" | 8 | 0 | 80° – 88° |
| September | 88° | 72° | 5.8" | 0.0" | 8 | 0 | 77° – 84° |
| October | 81° | 63° | 5.3" | 0.0" | 6 | 0 | 68° – 77° |
| November | 71° | 54° | 4.2" | 0.0" | 6 | 0 | 57° – 68° |
| December | 65° | 47° | 4.4" | 0.0" | 8 | 0 | 49° – 61° |
| Year | 78° | 62° | 55.4" | 0.0" | 86 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 49° to 66°. July is the most reliable, staying within 5°.
Where La Porte’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 La Porte’s center.
- Snow: Houston Deer Park, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Houston Hobby Airport, 14 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 La Porte’s climate
What is the weather like in La Porte?
A typical July afternoon reaches 91°, a January night drops to 45°, and snow is almost unheard of. Milder January nights than 94% of U.S. towns; hotter July afternoons than 83% of U.S. towns.
How cold does it get in La Porte in winter?
January nights average 45°. About 4 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 48°.
How much snow does La Porte get?
About 0.0 inches in a normal winter at Houston Deer Park, TX, so most winters see none.
How hot does it get in La Porte?
July, with a typical high of 91° and a low of 76°. About 101 days a year reach 90° and 3 reach 100° (Houston Hobby Airport).
When is the first and last frost in La Porte?
There is no reliable frost date: a 32° night comes in about 86% of winters at Houston Hobby Airport, so most years bring a freeze but some pass without one.
What growing zone is La Porte in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 28°.
What is the best time of year to visit La Porte?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is La Porte getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 51% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in La Porte.
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.