Galveston, TX Climate: Temperature by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Galveston's primary NOAA station, GALVESTON.
The climate verdict for Galveston
Warm-season cooling demand defines Galveston, Texas, running at more than twice its heating total. The NOAA normal records an annual average of 71°F. July is the warmest month at 85°F and January the coldest at 56°F.
- 71°F
- yearly average temperature, NOAA normal
Galveston: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00012944 · Galveston, TX 71°F mean
TEMP-HOT · RANK-WARM · PHOTO-FINISH · PRCP-UNK · SWING-NARROW · COMF-UNK · LOAD-COOL · STN-1 · BOOK-PART
- TEMP-HOT 71°F
- RANK-WARM #6,587
- PHOTO-FINISH ≈ Port O'connor
- PRCP-UNK Rain n/a
- SWING-NARROW 29°F
- COMF-UNK Comfort n/a
- LOAD-COOL 3,307 CDD
- STN-1 USW00012944
- BOOK-PART 4/6 fields
Nearest mean-temperature peer: Port O'connor, TX (+ 0.1 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every TX station list.
- Hot Port O'connor, TX 72°F
- Galveston (this station) 71°F
- Cold Refugio, TX 71°F
- Near Point Comfort, TX 71°F
- Near Live Oak, FL 71°F
Galveston sits in Texas, the #4 hottest U.S. state at 66.2°F statewide annual average - see all 50 hottest states ranked by NOAA normals
National standing · cooling-led station
Where Galveston sits across the climate record
Available NOAA 1991–2020 fields for Galveston are ranked only against stations that publish the same field, missing metrics stay blank rather than estimated.
- Annual temperature
- Top 4% warmest
- Among 6,861 stations, Galveston sits in the warmer third of annual means.
- Seasonal temperature swing
- Narrower than 91%
- Warmest-to-coldest month gap for Galveston is compact versus 6,861 complete station-years.
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 63°F (17°C) | 48°F (9°C) | 56°F (13°C) | N/A | 1.7 | 0.0 |
| February | 65°F (19°C) | 51°F (11°C) | 58°F (15°C) | N/A | 0.4 | 0.0 |
| March | 70°F (21°C) | 58°F (15°C) | 64°F (18°C) | N/A | 0.0 | 0.0 |
| April | 76°F (24°C) | 63°F (17°C) | 69°F (21°C) | N/A | 0.0 | 0.0 |
| May | 83°F (28°C) | 72°F (22°C) | 78°F (25°C) | N/A | 0.0 | 0.4 |
| June | 88°F (31°C) | 77°F (25°C) | 83°F (28°C) | N/A | 0.0 | 7.5 |
| July | 90°F (32°C) | 80°F (27°C) | 85°F (29°C) | N/A | 0.0 | 17.2 |
| August | 91°F (33°C) | 79°F (26°C) | 85°F (29°C) | N/A | 0.0 | 20.3 |
| September | 89°F (31°C) | 76°F (24°C) | 82°F (28°C) | N/A | 0.0 | 10.3 |
| October | 81°F (27°C) | 68°F (20°C) | 74°F (24°C) | N/A | 0.0 | 0.8 |
| November | 72°F (22°C) | 58°F (15°C) | 65°F (18°C) | N/A | 0.0 | 0.0 |
| December | 65°F (19°C) | 50°F (10°C) | 58°F (14°C) | N/A | 0.6 | 0.0 |
The year, day by day
The year in Galveston runs from a mild 48°F around January 1 to 91°F at the peak near August 8, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from July 22 through September 4, covering 45 dates. The broader mild season, normal highs of 70°F or more, runs March 15 to November 21.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 48°F around January 1.
The widest day
December 13 carries the biggest normal gap between afternoon and dawn, 16°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Galveston.
Where Galveston Stands Nationally
Among the steadiest day-night climates ranked: even the widest normal daily swing holds to roughly 16°F.
Galveston earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall
Frost Dates & Growing Season
First Fall Freeze
January 1
50% probability date
Last Spring Freeze
January 25
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
962
Higher = more heating needed
Cooling Degree Days
3,307
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside TX closest to Galveston on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (71°F here).
- Jacksonville Beach, FL 71°F · 0.0°F off
- Palm Coast, FL 71°F · 0.0°F off
- Scottsmoor, FL 71°F · 0.0°F off
- Daytona Beach, FL 72°F · 0.1°F off
Data-derived climate profile
How Galveston's climate pattern fits together
cooling led · low swing
Warm-season load persists through a relatively even calendar in Galveston. Cooling totals 3,307 degree days, more than double the 962 heating measure, and the 29.4°F seasonal range is compact rather than sharply divided.
A moisture-range label is withheld because Galveston's annual precipitation total is unavailable. Monthly source values remain visible where NOAA provides them, and no annual amount is reconstructed from incomplete data.
Temperature varies within a narrow 29.4°F band across the normal year. July and January mark the typical warm and cold ends of the calendar. The annual average is 71°F. Monthly rows still matter, but they refine a steady profile rather than reveal two climatic extremes.
A frost-free growing-season length is not available for Galveston. That missing field is kept separate from the observed temperature and precipitation record rather than filled from a regional estimate.
These labels group NOAA 1991-2020 normals from Galveston's primary station, so the summer figures are a thirty-year average rather than a ceiling: individual years have run hotter and will again. For Galveston that means a descriptive range only — not an official NOAA classification and not a prediction for next summer.
Questions about Galveston's climate
How many days above 90°F does Galveston get? ▼
How much energy does heating and cooling require in Galveston? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Galveston's primary station: GALVESTON (USW00012944). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 4828068). Match rule for Galveston: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Galveston comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.