Photo: Jim Evans · CC BY-SA 4.0Winter nights in Bolivar Peninsula are milder than in 95% of U.S. towns
July afternoons average 89°. By precipitation alone, it ranks wetter than 94% of U.S. towns. Since 1901–2000, the year has warmed by 1.3°, most of all in February. Comfortable outdoor weather lasts from February to May and October to December, with highs of 64–82°.
A year in Bolivar Peninsula at a glance
Each month’s typical high and low, and what it brings.
What stands out about Bolivar Peninsula’s climate
Compared with towns across the U.S., with Bolivar Peninsula’s place in Texas beside it.
What a year in Bolivar Peninsula 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 Galveston, TX, 19 miles from the town’s center, at about the same height.
The 2023 USDA map puts Bolivar Peninsula’s center in zone 10a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 30°. 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 56 inches of rain a year
September is the wettest month and February the driest. Rain falls on about 92 days a year. Snow is rare: about 0.2" in a normal year at Anahuac, TX, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Bolivar Peninsula
23% 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 Galveston, TX.
Living with Bolivar Peninsula’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 10a. Frost comes about 7 winters in 10, so tender plants can often stay out through winter.
Months with highs of 62–84° and lows of 40° or more: February, March, April, May, October, November and December. 11 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Bolivar Peninsula from natural hazards, river flooding is the largest share (31%); heat waves, cold waves, winter storms and ice storms together are 9%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Bolivar Peninsula and similar climates
TownRatings has no climate map of the towns around Bolivar Peninsula yet.
Climates most like Bolivar Peninsula’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 |
|---|---|---|---|---|
| Bolivar Peninsula, TX | 46° | 89° | 56" | 0.2" |
| Callaway, FL | 44° | 90° | 58" | 0.0" |
| Patterson, LA | 44° | 90° | 60" | 0.0" |
| Gulf Shores, AL | 44° | 90° | 62" | 0.0" |
| St. Marys, GA | 43° | 91° | 51" | 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 Bolivar Peninsula averaged 1.3° warmer than the 1900s. The biggest change is in February (+2.4°).
A smaller 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 Bolivar Peninsula compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Bolivar Peninsula’s place among Texas’.
Bolivar Peninsula weather by month
Highs, lows and precipitation from NOAA’s grid at Bolivar Peninsula’s center; snow, wet days and snow on the ground from Anahuac, TX. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 61° | 46° | 4.7" | 0.0" | 9 | 0 | 49° – 61° |
| February | 64° | 50° | 3.1" | 0.0" | 8 | 0 | 48° – 66° |
| March | 70° | 56° | 3.4" | 0.0" | 8 | 0 | 57° – 70° |
| April | 75° | 63° | 3.5" | 0.0" | 6 | 0 | 64° – 73° |
| May | 82° | 70° | 4.4" | 0.0" | 6 | 0 | 73° – 79° |
| June | 87° | 76° | 5.6" | 0.0" | 9 | 0 | 80° – 84° |
| July | 89° | 78° | 4.8" | 0.0" | 9 | 0 | 81° – 86° |
| August | 90° | 78° | 5.7" | 0.0" | 9 | 0 | 80° – 88° |
| September | 87° | 74° | 6.5" | 0.0" | 9 | 0 | 77° – 85° |
| October | 80° | 65° | 5.4" | 0.0" | 6 | 0 | 69° – 77° |
| November | 70° | 56° | 4.2" | 0.0" | 6 | 0 | 58° – 68° |
| December | 64° | 49° | 4.5" | 0.2" | 9 | 0 | 49° – 60° |
| Year | 77° | 63° | 55.7" | 0.2" | 92 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 48° to 66°. June is the most reliable, staying within 5°.
Where Bolivar Peninsula’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 Bolivar Peninsula’s center.
- Snow: Anahuac, TX.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Galveston, TX, 19 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 Bolivar Peninsula’s climate
What is the weather like in Bolivar Peninsula?
A typical July afternoon reaches 89°, a January night drops to 46°, and snow is almost unheard of. Milder January nights than 95% of U.S. towns; hotter July afternoons than 74% of U.S. towns.
How cold does it get in Bolivar Peninsula in winter?
January nights average 46°. About 3 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 49°.
How much snow does Bolivar Peninsula get?
About 0.2 inches in a normal winter at Anahuac, TX, so most winters see none.
How hot does it get in Bolivar Peninsula?
July, with a typical high of 89° and a low of 78°. About 57 days a year reach 90° (Galveston, TX).
When is the first and last frost in Bolivar Peninsula?
There is no reliable frost date: a 32° night comes in about 73% of winters at Galveston, TX, so most years bring a freeze but some pass without one.
What growing zone is Bolivar Peninsula in?
Zone 10a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 30°.
What is the best time of year to visit Bolivar Peninsula?
By one simple rule (highs of 62–84° and lows of 40° or more), 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 Bolivar Peninsula getting warmer?
Yes: 1991–2020 averaged 1.3° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 53% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Bolivar Peninsula.
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.