Pasadena, Texas climate: NOAA's gridded normals for the city, beside the nearest station records
NOAA's gridded 1991-2020 normals put Pasadena's center at January lows of 45°F and July highs of 92°F, a yearly mean of 70.1°F and 54.7 inches of precipitation. No NOAA station keeps a record under the city's name. The nearest station record, Houston Hobby Airport (8 miles W, 44 ft), has January lows of 46°F and July highs of 93°F.
149,617 people (Census Bureau 2024). Distances and directions are from the city's center.
- Jan 63° 45°
- Feb 67° 49°
- Mar 72° 55°
- Apr 78° 61°
- May 85° 68°
- Jun 90° 74°
- Jul 92° 76°
- Aug 93° 76°
- Sep 89° 71°
- Oct 82° 62°
- Nov 72° 53°
- Dec 65° 47°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
The months above are NOAA's gridded normals at Pasadena's center.
What is each month like in Pasadena?
NOAA's grid estimates the normals every 5 km or so from the stations around each point, terrain included. It smooths between stations, so night lows at the heart of a large city can run warmer than the grid shows: at five big-city airports we compared, the grid's highs were within about 1°F of the station and its lows 1-6°F cooler. The nearest record's high and low are beside each month.
| Month | High | Low | Mean | Precip. | Houston Hobby Airport high | Houston Hobby Airport low |
|---|---|---|---|---|---|---|
| January | 63°F | 45°F | 54.2°F | 4.31 | 64°F | 46°F |
| February | 67°F | 49°F | 58.0°F | 2.97 | 68°F | 50°F |
| March | 72°F | 55°F | 63.6°F | 3.43 | 73°F | 56°F |
| April | 78°F | 61°F | 69.3°F | 3.91 | 79°F | 62°F |
| May | 85°F | 68°F | 76.2°F | 5.13 | 86°F | 69°F |
| June | 90°F | 74°F | 81.7°F | 5.60 | 91°F | 75°F |
| July | 92°F | 76°F | 83.7°F | 4.44 | 93°F | 77°F |
| August | 93°F | 76°F | 84.1°F | 5.35 | 94°F | 77°F |
| September | 89°F | 71°F | 80.0°F | 5.79 | 89°F | 73°F |
| October | 82°F | 62°F | 71.8°F | 5.22 | 82°F | 64°F |
| November | 72°F | 53°F | 62.5°F | 4.19 | 73°F | 54°F |
| December | 65°F | 47°F | 56.0°F | 4.36 | 66°F | 48°F |
In metric: a yearly mean of 21.2°C, January lows of 7°C, July highs of 33°C and 1,389 mm of precipitation a year.
Source: NOAA NCEI U.S. Monthly Gridded Climate Normals 1991-2020 (nClimGrid, accession 0245564); NOAA NCEI 1991-2020 station normals. The grid cell holding the city's Census center point.
What do the station records around Pasadena say?
Each row is a NOAA station's own 1991-2020 normals, with the snow and frost dates the grid does not give. A record downhill or nearer the coast than the city can run warmer, one uphill cooler: compare the elevations.
| Record | Where | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Houston Hobby Airport | 8 mi W | 44 ft | 71.1°F | 46°F | 93°F | 55.6 | – | January 30 |
| Houston Clover Field | 11 mi SW | 44 ft | 71.3°F | 46°F | 93°F | 53.3 | – | January 31 |
| League CityHouston Nwso | 13 mi S | 19 ft | 70.6°F | 46°F | 92°F | 60.2 | 0 | January 31 |
Source: NOAA NCEI 1991-2020 U.S. Climate Normals; place center and population: Census Bureau 2024. Last frost: the median last spring date of 32°F.
How much snow, how late a frost, what zone and how much sun in Pasadena?
NOAA's grid gives no snow, frost dates or records, so these come from the nearest station record, Houston Hobby Airport (8 miles W, 44 ft). NOAA publishes no snowfall normal for it; the nearest record that has one, League City (13 miles S), gets 0 inches a year. The last spring frost (32°F) comes after January 30 in half of years and the first autumn frost before December 28. Its record high is 109°F (2023) and its record low 5°F (1940) (kept since 1930).
The USDA's 2023 Plant Hardiness Zone Map puts Pasadena in zone 9b across its 9 ZIP code areas.
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area (4.7 kWh per square metre a day, NASA POWER 2001-2020); October is the sunniest month (83%) and February the cloudiest (66%).
Houston Hobby Airport's page has its months, frost probabilities, records by month and recent years. NOAA's grid has monthly figures only, so there are no day-by-day month pages for Pasadena; the nearest record's month pages have them.
Source: NOAA NCEI 1991-2020 normals, station USW00012918; records: ACIS; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; sunshine: NASA POWER.
How does the climate vary across Pasadena, ZIP code by ZIP code?
9 ZIP code areas lie wholly or partly in Pasadena. On NOAA's grid 77504 is the warmest (70.2°F a year) and 77507 the coolest (70.0°F), so the city is nearly uniform. Each row also names the nearest station record and its frost dates.
| ZIP code | Zone | Year | Jan low | Jul high | Precip. | Nearest record | Last frost | First frost |
|---|---|---|---|---|---|---|---|---|
| 77058 | 9b | 70.1°F | 45°F | 91°F | 54.4 | League City (6 mi) | January 31 | December 14 |
| 77059 | 9b | 70.1°F | 45°F | 91°F | 54.7 | Houston Clover Field (10 mi) | January 31 | December 27 |
| 77502 | 9b | 70.1°F | 45°F | 92°F | 54.6 | Houston Hobby Airport (6 mi) | January 30 | December 28 |
| 77503 | 9b | 70.1°F | 45°F | 92°F | 54.9 | Houston Hobby Airport (8 mi) | January 30 | December 28 |
| 77504 | 9b | 70.2°F | 45°F | 92°F | 54.5 | Houston Hobby Airport (6 mi) | January 30 | December 28 |
| 77505 | 9b | 70.1°F | 45°F | 92°F | 54.7 | Houston Hobby Airport (8 mi) | January 30 | December 28 |
| 77506 | 9b | 70.1°F | 45°F | 93°F | 54.8 | Houston Hobby Airport (8 mi) | January 30 | December 28 |
| 77507 | 9b | 70.0°F | 46°F | 90°F | 54.9 | League City (11 mi) | January 31 | December 14 |
| 77586 | 9b | 70.2°F | 46°F | 90°F | 54.7 | League City (8 mi) | January 31 | December 14 |
Source: Census Bureau 2020 ZCTA-to-place relationship file and ZCTA centers; NOAA NCEI gridded and station normals, 1991-2020. A ZIP area counts when at least a tenth of its land (and 0.5 km²) is in the city; its figures are the grid cell at its center; frost dates are the nearest record's medians of 32°F.