Rotan, Texas climate: Normal weather by month, frost dates and records
Rotan's normal year runs from 34°F January nights to 96°F July afternoons, with 23.5 inches of precipitation and 4 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.6°C, January lows of 1°C, July highs of 35°C, 598 mm of precipitation a year.
- NOAA stationRotan
- Station IDUSC00417782
- Location32.86°N 100.46°W
- Elevation1,995 ft (608 m)
- Population1,324
On October 23, the normal high in Rotan is 76°F and the normal low 52°F, and the chance of measurable rain or snow is 13%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Rotan.
- Jan 56° 34°
- Feb 61° 37°
- Mar 69° 44°
- Apr 79° 53°
- May 86° 63°
- Jun 93° 72°
- Jul 96° 75°
- Aug 95° 73°
- Sep 87° 66°
- Oct 78° 55°
- Nov 66° 43°
- Dec 58° 36°
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 Rotan each month?
July is the warmest month, with normal highs of 96°F; January the coldest, with normal lows of 34°F. The most precipitation falls in May (3.15 in), the least in January (0.95 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 56°F | 34°F | 44.9°F | 0.95 | 0.4 | 3 | <1 | 18 | 10 h 10 min |
| February | 61°F | 37°F | 49.1°F | 1.33 | 1.2 | 3 | <1 | 12 | 11 h |
| March | 69°F | 44°F | 56.7°F | 1.68 | 0.2 | 4 | 1 | 5 | 12 h |
| April | 79°F | 53°F | 65.8°F | 1.77 | 0.4 | 3 | 5 | 1 | 13 h |
| May | 86°F | 63°F | 74.4°F | 3.15 | 0.0 | 6 | 13 | <1 | 13 h 50 min |
| June | 93°F | 72°F | 82.0°F | 2.94 | 0.0 | 5 | 22 | <1 | 14 h 20 min |
| July | 96°F | 75°F | 85.2°F | 1.96 | 0.0 | 4 | 27 | <1 | 14 h 10 min |
| August | 95°F | 73°F | 84.2°F | 2.18 | 0.0 | 4 | 26 | <1 | 13 h 20 min |
| September | 87°F | 66°F | 76.6°F | 2.72 | 0.0 | 4 | 14 | <1 | 12 h 30 min |
| October | 78°F | 55°F | 66.4°F | 2.27 | 0.0 | 4 | 4 | <1 | 11 h 30 min |
| November | 66°F | 43°F | 54.8°F | 1.53 | 0.5 | 3 | <1 | 6 | 10 h 30 min |
| December | 58°F | 36°F | 46.5°F | 1.06 | 0.8 | 3 | <1 | 14 | 10 h |
| Year (annual) | 77°F | 54°F | 65.5°F | 23.54 | 3.5 | 45 | 111 | 55 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 14°C | 1°C | 7.2°C | 24 mm | 1 cm |
| February | 16°C | 3°C | 9.5°C | 34 mm | 3 cm |
| March | 21°C | 7°C | 13.7°C | 43 mm | 1 cm |
| April | 26°C | 12°C | 18.8°C | 45 mm | 1 cm |
| May | 30°C | 17°C | 23.6°C | 80 mm | 0 cm |
| June | 34°C | 22°C | 27.8°C | 75 mm | 0 cm |
| July | 35°C | 24°C | 29.6°C | 50 mm | 0 cm |
| August | 35°C | 23°C | 29.0°C | 55 mm | 0 cm |
| September | 31°C | 19°C | 24.8°C | 69 mm | 0 cm |
| October | 26°C | 13°C | 19.1°C | 58 mm | 0 cm |
| November | 19°C | 6°C | 12.7°C | 39 mm | 1 cm |
| December | 14°C | 2°C | 8.1°C | 27 mm | 2 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00417782; 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 Rotan?
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 USC00417782.
When is the last frost in Rotan?
In Rotan, the last spring frost (32°F) comes after March 17 in half of years and after April 3 in one year in ten; the first autumn frost comes before November 15 in half of years and before October 31 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 171 year in 10 after April 3; 9 in 10 after February 28
- First autumn frost, half of years before
- November 151 year in 10 before October 31; 9 in 10 before December 3
NOAA puts the median frost-free season at 243 days, and the season without a hard freeze (28°F) at 268 days.
A hard freeze (28°F) comes after March 4 in half of springs and before November 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Rotan in zone 8a in ZIP code 79546, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Rotan's NOAA station is in zone 8a: the coldest night of a typical year reaches 13°F (21 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 USC00417782; 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.
How hot and how cold does it get in Rotan?
In a normal year in Rotan, 111 days a year reach 90°F (27 of them 100°F or more), 55 nights fall to 32°F or colder and 45 days bring measurable precipitation.
- Days at 90°F or more
- 111a normal year
- Days at 100°F or more
- 27a normal year
- Nights at 32°F or colder
- 55a normal year
- Days that stay below freezing
- 4high of 32°F or less
- Days with 0.01 inch of precipitation
- 45a normal year
- Days with 1 inch of snow or more
- 1a normal year
The highest temperature in this station's record (since 1962) is 116°F, on June 27, 1994; the lowest is −5°F, on February 2, 1985.
The wettest calendar year on that record is 2007, with 31.89 in; the snowiest season is 1946–47, with 17.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00417782; records: ACIS (NOAA Regional Climate Centers), station USC00417782. Records use complete months only; a month missing more than three days is left out.
How sunny is Rotan?
Over a year 84% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Rotan, 5.3 kWh per square metre a day. June is the sunniest month (89%) and February the cloudiest (78%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 81% | 3.3 |
| February | 78% | 4.0 |
| March | 81% | 5.2 |
| April | 84% | 6.4 |
| May | 83% | 6.8 |
| June | 89% | 7.4 |
| July | 88% | 7.1 |
| August | 88% | 6.5 |
| September | 84% | 5.4 |
| October | 84% | 4.5 |
| November | 83% | 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 Rotan need?
A normal year in Rotan brings 2,461 heating degree days, 54% fewer than the median U.S. place (5,373), and 2,696 cooling degree days, 3.0 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 6,368 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 622 | 1 |
| February | 451 | 5 |
| March | 286 | 29 |
| April | 94 | 118 |
| May | 17 | 310 |
| June | 0 | 510 |
| July | 0 | 625 |
| August | 0 | 595 |
| September | 7 | 354 |
| October | 88 | 132 |
| November | 322 | 17 |
| December | 575 | 1 |
| Year (annual) | 2,461 | 2,696 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00417782. 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 Rotan's climate compare?
Rotan is warmer than 152 of the other 320 places with their own NOAA record in Texas, and wetter than 94. Across the 7,247 U.S. stations with normals, its annual mean of 65.5°F is warmer than 89%.
In the Köppen classification computed from these normals, Rotan 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 Rotan share this climate record?
3 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.
- Roby, TX588 people · 9 mi SE
- McCaulley, TX45 people · 16 mi E
- Sylvester, TX0 people · 15 mi SE
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 Rotan's climate
What is the coldest month in Rotan?
January, with a normal high of 56°F and a normal low of 34°F. The warmest is July (96°F by day, 75°F at night).
Does it snow in Rotan?
Yes: 4 inches in a normal year, falling on 2 days with 0.1 inch or more, the most in February (1.2 inches).
What is the rainiest month in Rotan?
May, with 3.15 in of precipitation in a normal year; the driest is January with 0.95 in.
What plant hardiness zone is Rotan in?
The USDA's 2023 map puts Rotan in zone 8a in ZIP code 79546, the nearest ZIP area. By the same method at Rotan's NOAA station, the coldest night of a typical year reaches 13°F (21 years, 1991-2020): zone 8a.
How late can frost come in Rotan?
In half of years the last 32°F night comes after March 17; in one year in ten it comes after April 3. Waiting until April 3 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Aspermont, TX24 miles from this station, 63.6°F a year
- Snyder, TX28 miles from this station, 63.3°F a year
- Jayton, TX29 miles from this station, 63.1°F a year
- Roscoe, TX29 miles from this station, 63.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made