Ozona, Texas climate: Normal weather by month, frost dates and records
Ozona's normal year runs from 30°F January nights to 94°F July afternoons, with 19.8 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.1°C, January lows of −1°C, July highs of 35°C, 504 mm of precipitation a year.
- NOAA stationOzona
- Station IDUSC00416734
- Location30.72°N 101.21°W
- Elevation2,345 ft (715 m)
- Population (census place)2,485
On October 23, the normal high in Ozona is 76°F and the normal low 49°F, and the chance of measurable rain or snow is 11%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Ozona.
- Jan 60° 30°
- Feb 64° 34°
- Mar 71° 42°
- Apr 80° 51°
- May 87° 61°
- Jun 93° 69°
- Jul 94° 70°
- Aug 94° 70°
- Sep 89° 63°
- Oct 79° 52°
- Nov 67° 39°
- Dec 60° 32°
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 Ozona each month?
July is the warmest month, with normal highs of 94°F; January the coldest, with normal lows of 30°F. The most precipitation falls in May (2.81 in), the least in December (0.80 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 60°F | 30°F | 44.9°F | 0.96 | 3 | <1 | 20 | 10 h 20 min |
| February | 64°F | 34°F | 49.2°F | 0.88 | 3 | <1 | 13 | 11 h 10 min |
| March | 71°F | 42°F | 56.8°F | 1.96 | 4 | <1 | 6 | 12 h |
| April | 80°F | 51°F | 65.2°F | 1.78 | 3 | 4 | 1 | 12 h 50 min |
| May | 87°F | 61°F | 74.0°F | 2.81 | 4 | 12 | <1 | 13 h 40 min |
| June | 93°F | 69°F | 80.8°F | 1.95 | 4 | 21 | <1 | 14 h 10 min |
| July | 94°F | 70°F | 82.4°F | 1.25 | 3 | 25 | <1 | 14 h |
| August | 94°F | 70°F | 81.8°F | 1.81 | 4 | 25 | <1 | 13 h 20 min |
| September | 89°F | 63°F | 75.8°F | 2.14 | 3 | 13 | <1 | 12 h 20 min |
| October | 79°F | 52°F | 65.2°F | 2.24 | 3 | 1 | 1 | 11 h 30 min |
| November | 67°F | 39°F | 53.3°F | 1.26 | 3 | <1 | 9 | 10 h 40 min |
| December | 60°F | 32°F | 45.8°F | 0.80 | 3 | <1 | 18 | 10 h 10 min |
| Year (annual) | 78°F | 51°F | 64.6°F | 19.84 | 39 | 102 | 67 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 16°C | −1°C | 7.2°C | 24 mm |
| February | 18°C | 1°C | 9.6°C | 22 mm |
| March | 22°C | 6°C | 13.8°C | 50 mm |
| April | 27°C | 10°C | 18.4°C | 45 mm |
| May | 30°C | 16°C | 23.3°C | 71 mm |
| June | 34°C | 20°C | 27.1°C | 50 mm |
| July | 35°C | 21°C | 28.0°C | 32 mm |
| August | 34°C | 21°C | 27.7°C | 46 mm |
| September | 32°C | 17°C | 24.3°C | 54 mm |
| October | 26°C | 11°C | 18.4°C | 57 mm |
| November | 20°C | 4°C | 11.8°C | 32 mm |
| December | 16°C | 0°C | 7.7°C | 20 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416734; 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 Ozona?
Normal highs sit between 65°F and 85°F in March, April, October and November. Of those, November has the fewest days with rain (3).
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 USC00416734.
When is the last frost in Ozona?
In Ozona, the last spring frost (32°F) comes after March 21 in half of years and after April 12 in one year in ten; the first autumn frost comes before November 6 in half of years and before October 24 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 211 year in 10 after April 12; 9 in 10 after March 3
- First autumn frost, half of years before
- November 61 year in 10 before October 24; 9 in 10 before November 21
NOAA puts the median frost-free season at 227 days, and the season without a hard freeze (28°F) at 251 days.
A hard freeze (28°F) comes after March 8 in half of springs and before November 16 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Ozona in zone 8a in ZIP code 76943, the nearest ZIP area.
Frost dates for every NOAA station in Texas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00416734; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Ozona?
In a normal year in Ozona, 102 days a year reach 90°F (12 of them 100°F or more), 67 nights fall to 32°F or colder and 39 days bring measurable precipitation.
- Days at 90°F or more
- 102a normal year
- Days at 100°F or more
- 12a normal year
- Nights at 32°F or colder
- 67a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 39a normal year
The highest temperature in this station's record (since 1948) is 109°F, on August 18, 1969; the lowest is −8°F, on February 2, 1951.
The wettest calendar year on that record is 1971, with 30.05 in; the snowiest season is 1965–66, with 8.3 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00416734; records: ACIS (NOAA Regional Climate Centers), station USC00416734. Records use complete months only; a month missing more than three days is left out.
How sunny is Ozona?
Over a year 84% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Ozona, 5.3 kWh per square metre a day. August is the sunniest month (89%) and February the cloudiest (79%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 80% | 3.4 |
| February | 79% | 4.2 |
| March | 80% | 5.3 |
| April | 83% | 6.3 |
| May | 82% | 6.6 |
| June | 89% | 7.3 |
| July | 89% | 7.1 |
| August | 89% | 6.6 |
| September | 84% | 5.4 |
| October | 83% | 4.5 |
| November | 82% | 3.6 |
| December | 79% | 3.1 |
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 Ozona need?
A normal year in Ozona brings 2,485 heating degree days, 54% fewer than the median U.S. place (5,373), and 2,367 cooling degree days, 2.6 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,933 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 622 | 0 |
| February | 443 | 1 |
| March | 269 | 15 |
| April | 89 | 95 |
| May | 12 | 290 |
| June | 0 | 474 |
| July | 0 | 538 |
| August | 0 | 519 |
| September | 5 | 327 |
| October | 94 | 102 |
| November | 358 | 7 |
| December | 594 | 0 |
| Year (annual) | 2,485 | 2,367 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416734. 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.
How does Ozona's climate compare?
Ozona is warmer than 111 of the other 320 places with their own NOAA record in Texas, and wetter than 55. Across the 7,247 U.S. stations with normals, its annual mean of 64.6°F is warmer than 87%.
In the Köppen classification computed from these normals, Ozona 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.
What do Ozona's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Ozona. This page uses Ozona; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Ozona (22 mi SE) USC00416733 | 22 mi SE | 2,120 ft | 65.0°F | 29°F | 96°F | 21.6 | – | April 1 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Ozona's climate
What is the coldest month in Ozona?
January, with a normal high of 60°F and a normal low of 30°F. The warmest is July (94°F by day, 70°F at night).
What is the rainiest month in Ozona?
May, with 2.81 in of precipitation in a normal year; the driest is December with 0.80 in.
What plant hardiness zone is Ozona in?
The USDA's 2023 map puts Ozona in zone 8a in ZIP code 76943, the nearest ZIP area.
How late can frost come in Ozona?
In half of years the last 32°F night comes after March 21; 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
- Texas climateThe statewide normals and every place in the state
- Acton Ranch, TX25 miles from this station, 65.1°F a year
- Sonora, TX34 miles from this station, 65.8°F a year
- Pandale (11 mi NE), TX34 miles from this station, 67.1°F a year
- Big Lake, TX37 miles from this station, 65.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made