San Angelo, Texas climate: Normal weather by month, frost dates and records
San Angelo's normal year runs from 34°F January nights to 97°F July afternoons, with 20.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 19.3°C, January lows of 1°C, July highs of 36°C, 532 mm of precipitation a year.
- NOAA stationSan Angelo Mathis Field Airport
- Station IDUSW00023034
- Location31.37°N 100.49°W
- Elevation1,890 ft (576 m)
- From the center5 miles
- Population100,159
On October 23, the normal high in San Angelo is 78°F and the normal low 51°F, and the chance of measurable rain or snow is 18%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for San Angelo.
- Jan 61° 34°
- Feb 65° 38°
- Mar 73° 46°
- Apr 82° 53°
- May 89° 62°
- Jun 94° 70°
- Jul 97° 72°
- Aug 97° 72°
- Sep 89° 65°
- Oct 81° 54°
- Nov 69° 43°
- Dec 62° 35°
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 San Angelo each month?
July is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 34°F. The most precipitation falls in May (3.05 in), the least in December (0.89 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 | 61°F | 34°F | 47.4°F | 0.92 | 4 | <1 | 15 | 10 h 20 min |
| February | 65°F | 38°F | 51.5°F | 1.20 | 5 | <1 | 9 | 11 h |
| March | 73°F | 46°F | 59.4°F | 1.48 | 5 | 1 | 4 | 12 h |
| April | 82°F | 53°F | 67.1°F | 1.47 | 4 | 6 | 1 | 12 h 50 min |
| May | 89°F | 62°F | 75.5°F | 3.05 | 7 | 14 | <1 | 13 h 40 min |
| June | 94°F | 70°F | 82.2°F | 2.31 | 6 | 23 | <1 | 14 h 10 min |
| July | 97°F | 72°F | 84.8°F | 1.10 | 4 | 28 | <1 | 14 h |
| August | 97°F | 72°F | 84.1°F | 2.42 | 6 | 27 | <1 | 13 h 20 min |
| September | 89°F | 65°F | 77.0°F | 2.51 | 5 | 15 | <1 | 12 h 20 min |
| October | 81°F | 54°F | 67.1°F | 2.42 | 6 | 4 | 1 | 11 h 30 min |
| November | 69°F | 43°F | 55.9°F | 1.16 | 4 | <1 | 6 | 10 h 40 min |
| December | 62°F | 35°F | 48.4°F | 0.89 | 4 | <1 | 14 | 10 h 10 min |
| Year (annual) | 80°F | 54°F | 66.7°F | 20.93 | 60 | 119 | 49 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | 1°C | 8.6°C | 23 mm |
| February | 19°C | 3°C | 10.8°C | 30 mm |
| March | 23°C | 8°C | 15.2°C | 38 mm |
| April | 28°C | 11°C | 19.5°C | 37 mm |
| May | 32°C | 17°C | 24.2°C | 77 mm |
| June | 35°C | 21°C | 27.9°C | 59 mm |
| July | 36°C | 22°C | 29.3°C | 28 mm |
| August | 36°C | 22°C | 28.9°C | 61 mm |
| September | 32°C | 18°C | 25.0°C | 64 mm |
| October | 27°C | 12°C | 19.5°C | 61 mm |
| November | 21°C | 6°C | 13.3°C | 29 mm |
| December | 17°C | 2°C | 9.1°C | 23 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. San Angelo's own co-op station San Angelo Weather Office does: 1 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00023034; 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 San Angelo?
Normal highs sit between 65°F and 85°F in February, March, April, October and November. Of those, November has the fewest days with rain (4).
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 USW00023034.
When is the last frost in San Angelo?
In San Angelo, the last spring frost (32°F) comes after March 20 in half of years and after April 12 in one year in ten; the first autumn frost comes before November 10 in half of years and before October 28 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 201 year in 10 after April 12; 9 in 10 after March 1
- First autumn frost, half of years before
- November 101 year in 10 before October 28; 9 in 10 before November 28
NOAA puts the median frost-free season at 232 days, and the season without a hard freeze (28°F) at 259 days.
A hard freeze (28°F) comes after March 6 in half of springs and before November 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts San Angelo in zone 8a across its 2 ZIP code areas (8a in 76903, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, San Angelo's NOAA station is in zone 8b: the coldest night of a typical year reaches 16°F (30 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00023034; 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 San Angelo ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. San Angelo's 2 ZIP code areas are all in zone 8a. 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 San Angelo?
In a normal year in San Angelo, 119 days a year reach 90°F (30 of them 100°F or more), 49 nights fall to 32°F or colder and 60 days bring measurable precipitation.
- Days at 90°F or more
- 119a normal year
- Days at 100°F or more
- 30a normal year
- Nights at 32°F or colder
- 49a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 60a normal year
The highest temperature in San Angelo's official record (kept by the National Weather Service since 1907) is 114°F, on June 21, 2023; the lowest is −4°F, on December 23, 1989.
The wettest calendar year on that record is 2016, with 35.72 in; the snowiest season is 2020–21, with 15.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00023034; records: ACIS (NOAA Regional Climate Centers), NWS threaded record SJTthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is San Angelo, and how clear are its skies?
The summer (June-August) dew point averages 62°F. The muggiest month is June, with an average dew point of 63°F; the driest air comes in December (31°F). March is the windiest month (11.1 mph on average), and July has the most clear or nearly clear hours (83%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 32°F | 57% | 35% | 9.5 mph | 69% | 24% |
| February | 35°F | 52% | 31% | 10.4 mph | 71% | 22% |
| March | 43°F | 52% | 31% | 11.1 mph | 72% | 20% |
| April | 50°F | 50% | 29% | 11.0 mph | 74% | 16% |
| May | 61°F | 58% | 36% | 10.0 mph | 77% | 11% |
| June | 63°F | 55% | 35% | 9.4 mph | 79% | 7% |
| July | 62°F | 49% | 30% | 8.3 mph | 83% | 6% |
| August | 62°F | 56% | 35% | 7.4 mph | 80% | 7% |
| September | 55°F | 58% | 36% | 7.9 mph | 80% | 11% |
| October | 45°F | 60% | 37% | 8.8 mph | 71% | 20% |
| November | 35°F | 58% | 35% | 9.4 mph | 73% | 20% |
| December | 31°F | 58% | 36% | 9.1 mph | 70% | 23% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00023034. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is San Angelo?
Over a year 84% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around San Angelo, 5.2 kWh per square metre a day. June is the sunniest month (89%) and February the cloudiest (78%). Among the 459 U.S. places of 50,000 or more, that ranks 92nd in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 80% | 3.3 |
| February | 78% | 4.1 |
| March | 79% | 5.2 |
| April | 83% | 6.3 |
| May | 82% | 6.6 |
| June | 89% | 7.3 |
| July | 88% | 7.0 |
| August | 88% | 6.5 |
| September | 83% | 5.3 |
| October | 83% | 4.5 |
| November | 82% | 3.5 |
| December | 80% | 3.0 |
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 San Angelo need?
A normal year in San Angelo brings 2,130 heating degree days, 60% fewer than the median U.S. place (5,373), and 2,786 cooling degree days, 3.1 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,598 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 547 | 1 |
| February | 386 | 8 |
| March | 222 | 47 |
| April | 75 | 138 |
| May | 10 | 336 |
| June | 0 | 516 |
| July | 0 | 615 |
| August | 0 | 594 |
| September | 6 | 366 |
| October | 76 | 142 |
| November | 294 | 21 |
| December | 515 | 2 |
| Year (annual) | 2,130 | 2,786 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00023034. 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 San Angelo been warmer than normal lately?
2025 averaged 67.4°F, 0.7°F above the 1991-2020 normal of 66.7°F. 4 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 66.4°F | −0.3°F | 23.23 |
| 2022 | 67.8°F | +1.0°F | 13.70 |
| 2023 | 68.9°F | +2.2°F | 19.32 |
| 2024 | 69.4°F | +2.7°F | 19.33 |
| 2025 | 67.4°F | +0.7°F | 27.24 |
Over 72 complete years from 1948 to 2025, the station's annual mean temperature rose at a fitted 3.4°F per century (+0.19°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00023034; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does San Angelo's climate compare?
San Angelo is warmer than 196 of the other 320 places with their own NOAA record in Texas, and wetter than 64. Across the 7,247 U.S. stations with normals, its annual mean of 66.7°F is warmer than 91%.
In the Köppen classification computed from these normals, San Angelo 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 San Angelo share this climate record?
Christoval has no NOAA station with 1991-2020 normals of its 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.
- Christoval, TX243 people · 12 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do San Angelo's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near San Angelo. This page uses San Angelo Mathis Field Airport; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| San Angelo Weather Office USC00417944 | 6 mi SW | 1,890 ft | 65.4°F | 32°F | 96°F | 20.9 | 1 | March 22 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about San Angelo's climate
What is the coldest month in San Angelo?
January, with a normal high of 61°F and a normal low of 34°F. The warmest is July (97°F by day, 72°F at night).
Does it snow in San Angelo?
Yes. NOAA publishes no 1991-2020 snowfall normal for San Angelo's NOAA station; San Angelo's own co-op station San Angelo Weather Office records 1 inches of snow in a normal year.
What is the rainiest month in San Angelo?
May, with 3.05 in of precipitation in a normal year; the driest is December with 0.89 in.
What plant hardiness zone is San Angelo in?
The USDA's 2023 map puts San Angelo in zone 8a across its 2 ZIP code areas (8a in 76903, the largest). By the same method at San Angelo's NOAA station, the coldest night of a typical year reaches 16°F (30 years, 1991-2020): zone 8b.
How late can frost come in San Angelo?
In half of years the last 32°F night comes after March 20; in one year in ten it comes after April 12. Waiting until April 12 leaves about a one-in-ten chance of a later frost.
Nearby and next
- San Angelo in OctoberThis month day by day, its records and recent years
- Texas climateThe statewide normals and every place in the state
- Mertzon (12 mi NNW), TX23 miles from this station, 63.9°F a year
- Water Valley, TX25 miles from this station, 64.7°F a year
- Paint Rock, TX34 miles from this station, 65.1°F a year
- Eldorado, TX35 miles from this station, 63.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made