League City, Texas climate: Normal weather by month, frost dates and records
League City's normal year runs from 46°F January nights to 92°F August afternoons, with 60.2 inches of precipitation and less than an inch of snow (0.2 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 21.4°C, January lows of 8°C, August highs of 34°C, 1,529 mm of precipitation a year.
- NOAA stationHouston Nwso
- Station IDUSC00414333
- Location29.47°N 95.08°W
- Elevation19 ft (6 m)
- From the center2 miles
- Population118,456
On October 14, the normal high in League City is 83°F and the normal low 63°F, and the chance of measurable rain or snow is 26%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for League City.
- Jan 64° 46°
- Feb 67° 50°
- Mar 73° 56°
- Apr 78° 61°
- May 85° 69°
- Jun 90° 75°
- Jul 92° 76°
- Aug 92° 76°
- Sep 88° 72°
- Oct 82° 63°
- Nov 73° 53°
- Dec 66° 47°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in League City each month?
August is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 46°F. The most precipitation falls in September (7.34 in), the least in February (3.02 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 64°F | 46°F | 54.8°F | 4.80 | 10 | <1 | 4 | 10 h 30 min |
| February | 67°F | 50°F | 58.6°F | 3.02 | 9 | <1 | 1 | 11 h 10 min |
| March | 73°F | 56°F | 64.3°F | 3.30 | 9 | <1 | 1 | 12 h |
| April | 78°F | 61°F | 69.8°F | 4.22 | 8 | <1 | <1 | 12 h 50 min |
| May | 85°F | 69°F | 77.0°F | 5.12 | 7 | 3 | <1 | 13 h 40 min |
| June | 90°F | 75°F | 82.4°F | 6.54 | 10 | 14 | <1 | 14 h |
| July | 92°F | 76°F | 83.9°F | 4.36 | 10 | 23 | <1 | 13 h 50 min |
| August | 92°F | 76°F | 84.1°F | 6.64 | 10 | 23 | <1 | 13 h 10 min |
| September | 88°F | 72°F | 80.1°F | 7.34 | 11 | 11 | <1 | 12 h 20 min |
| October | 82°F | 63°F | 72.1°F | 5.79 | 8 | 2 | <1 | 11 h 30 min |
| November | 73°F | 53°F | 62.9°F | 4.54 | 8 | <1 | 1 | 10 h 40 min |
| December | 66°F | 47°F | 56.6°F | 4.53 | 11 | <1 | 3 | 10 h 20 min |
| Year (annual) | 79°F | 62°F | 70.6°F | 60.20 | 111 | 76 | 9 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 18°C | 8°C | 12.7°C | 122 mm |
| February | 20°C | 10°C | 14.8°C | 77 mm |
| March | 23°C | 13°C | 17.9°C | 84 mm |
| April | 26°C | 16°C | 21.0°C | 107 mm |
| May | 29°C | 21°C | 25.0°C | 130 mm |
| June | 32°C | 24°C | 28.0°C | 166 mm |
| July | 33°C | 24°C | 28.8°C | 111 mm |
| August | 34°C | 24°C | 28.9°C | 169 mm |
| September | 31°C | 22°C | 26.7°C | 186 mm |
| October | 28°C | 17°C | 22.3°C | 147 mm |
| November | 23°C | 12°C | 17.2°C | 115 mm |
| December | 19°C | 9°C | 13.7°C | 115 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414333; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit League City?
Normal highs sit between 65°F and 85°F in February, March, April, May, October, November and December. Of those, May has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414333.
When is the last frost in League City?
In League City, the last spring frost (32°F) comes after January 31 in half of years and after March 5 in one year in ten; the first autumn frost comes before December 14 in half of years and before November 19 in one year in ten. A night at 32°F or colder comes at all in 94% of years here (NOAA).
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- January 311 year in 10 after March 5; 9 in 10 after December 25
- First autumn frost, half of years before
- December 141 year in 10 before November 19; 9 in 10 before January 19
NOAA puts the median frost-free season at 317 days, and the season without a hard freeze (28°F) at 356 days.
A hard freeze (28°F) comes after January 17 in half of springs and before January 3 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts League City in zone 9b across its 4 ZIP code areas (9b in 77573, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, League City's NOAA station is in zone 9b: the coldest night of a typical year reaches 26°F (30 complete years).
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00414333; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each League City ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. League City's 4 ZIP code areas are all in zone 9b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in League City?
In a normal year in League City, 76 days a year reach 90°F (1 of them 100°F or more), 9 nights fall to 32°F or colder and 111 days bring measurable precipitation.
- Days at 90°F or more
- 76a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 9a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 111a normal year
The highest temperature in this station's record (since 1990) is 107°F, on August 27, 2023; the lowest is 15°F, on February 16, 2021.
The wettest calendar year on that record is 2017, with 88.45 in; the snowiest season is 2024–25, with 2.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00414333; records: ACIS (NOAA Regional Climate Centers), station USC00414333. Records use complete months only; a month missing more than three days is left out.
How sunny is League City?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around League City, 4.7 kWh per square metre a day. October is the sunniest month (83%) and February the cloudiest (66%). Among the 459 U.S. places of 50,000 or more, that ranks tied 243rd (with 32 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.9 |
| February | 66% | 3.3 |
| March | 72% | 4.5 |
| April | 74% | 5.3 |
| May | 79% | 6.0 |
| June | 81% | 6.3 |
| July | 81% | 6.1 |
| August | 82% | 5.8 |
| September | 80% | 5.0 |
| October | 83% | 4.4 |
| November | 77% | 3.3 |
| December | 70% | 2.6 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does League City need?
A normal year in League City brings 1,147 heating degree days, 79% fewer than the median U.S. place (5,373), and 3,198 cooling degree days, 3.5 times the median (908). One month needs 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 7,660 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 337 | 20 |
| February | 213 | 34 |
| March | 109 | 87 |
| April | 28 | 174 |
| May | 1 | 375 |
| June | 0 | 520 |
| July | 0 | 586 |
| August | 0 | 592 |
| September | 0 | 453 |
| October | 22 | 244 |
| November | 142 | 81 |
| December | 294 | 34 |
| Year (annual) | 1,147 | 3,198 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00414333. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has League City been warmer than normal lately?
2025 averaged 71.7°F, 1.1°F above the 1991-2020 normal of 70.6°F. 2 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2022 | 70.3°F | −0.3°F | 51.71 |
| 2023 | 72.3°F | +1.7°F | 43.83 |
| 2025 | 71.7°F | +1.1°F | 41.76 |
Source: observed years: ACIS, station USC00414333. A year counts only with all twelve months complete.
How does League City's climate compare?
League City is warmer than 265 of the other 320 places with their own NOAA record in Texas, and wetter than 300. Across the 7,247 U.S. stations with normals, its annual mean of 70.6°F is warmer than 96%.
In the Köppen classification computed from these normals, League City is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near League City share this climate record?
15 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- La Porte, TX38,046 people · 14 mi N
- Dickinson, TX21,941 people · 2 mi SE
- La Marque, TX20,194 people · 9 mi SE
- Seabrook, TX13,976 people · 10 mi NE
- Santa Fe, TX13,131 people · 6 mi S
- Webster, TX12,548 people · 5 mi NW
- Bacliff, TX9,935 people · 6 mi NE
- San Leon, TX5,764 people · 9 mi E
- Nassau Bay, TX5,229 people · 5 mi N
- Taylor Lake Village, TX3,792 people · 7 mi N
- El Lago, TX2,990 people · 7 mi N
- Kemah, TX2,853 people · 5 mi NE
- Shoreacres, TX1,540 people · 11 mi N
- Clear Lake Shores, TX1,294 people · 6 mi NE
- Morgan's Point, TX273 people · 15 mi N
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about League City's climate
What is the coldest month in League City?
January, with a normal high of 64°F and a normal low of 46°F. The warmest is August (92°F by day, 76°F at night).
Does it snow in League City?
Rarely: NOAA's normal is 0.2 inch a year.
What is the rainiest month in League City?
September, with 7.34 in of precipitation in a normal year; the driest is February with 3.02 in.
What plant hardiness zone is League City in?
The USDA's 2023 map puts League City in zone 9b across its 4 ZIP code areas (9b in 77573, the largest). By the same method at League City's NOAA station, the coldest night of a typical year reaches 26°F (30 years, 1991-2020): zone 9b.
How late can frost come in League City?
In half of years the last 32°F night comes after January 31; in one year in ten it comes after March 5. Waiting until March 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- League City in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- Houston Clover Field, TX10 miles from this station, 71.3°F a year
- Alvin, TX12 miles from this station, 69.3°F a year
- Houston Hobby Airport, TX17 miles from this station, 71.1°F a year
- Galveston, TX19 miles from this station, 72.3°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made