Olney, Texas climate: Normal weather by month, frost dates and records
Olney's normal year runs from 30°F January nights to 97°F July afternoons, with 29.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.7°C, January lows of −1°C, July highs of 36°C, 743 mm of precipitation a year.
- NOAA stationOlney
- Station IDUSC00416636
- Location33.37°N 98.77°W
- Elevation1,195 ft (364 m)
- From the centerunder 1 mile
- Population3,029
On October 23, the normal high in Olney is 75°F and the normal low 49°F, and the chance of measurable rain or snow is 19%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Olney.
- Jan 55° 30°
- Feb 60° 33°
- Mar 69° 41°
- Apr 77° 49°
- May 84° 59°
- Jun 92° 68°
- Jul 97° 72°
- Aug 97° 71°
- Sep 89° 64°
- Oct 78° 52°
- Nov 66° 40°
- Dec 57° 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 Olney each month?
July is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 30°F. The most precipitation falls in May (3.92 in), the least in January (1.41 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 55°F | 30°F | 42.7°F | 1.41 | 6 | <1 | 18 | 10 h 10 min |
| February | 60°F | 33°F | 46.8°F | 1.49 | 5 | <1 | 11 | 11 h |
| March | 69°F | 41°F | 55.0°F | 2.58 | 6 | 1 | 5 | 12 h |
| April | 77°F | 49°F | 63.1°F | 2.03 | 5 | 3 | 1 | 13 h |
| May | 84°F | 59°F | 71.6°F | 3.92 | 7 | 10 | <1 | 13 h 50 min |
| June | 92°F | 68°F | 80.3°F | 3.41 | 6 | 21 | <1 | 14 h 20 min |
| July | 97°F | 72°F | 84.5°F | 2.34 | 5 | 27 | <1 | 14 h 10 min |
| August | 97°F | 71°F | 84.1°F | 2.20 | 5 | 27 | <1 | 13 h 30 min |
| September | 89°F | 64°F | 76.3°F | 2.53 | 6 | 15 | <1 | 12 h 30 min |
| October | 78°F | 52°F | 65.0°F | 3.86 | 6 | 4 | <1 | 11 h 20 min |
| November | 66°F | 40°F | 53.2°F | 1.89 | 4 | <1 | 5 | 10 h 30 min |
| December | 57°F | 32°F | 44.6°F | 1.59 | 4 | <1 | 16 | 10 h |
| Year (annual) | 77°F | 51°F | 63.9°F | 29.25 | 64 | 108 | 56 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 13°C | −1°C | 5.9°C | 36 mm |
| February | 16°C | 1°C | 8.2°C | 38 mm |
| March | 20°C | 5°C | 12.8°C | 66 mm |
| April | 25°C | 10°C | 17.3°C | 52 mm |
| May | 29°C | 15°C | 22.0°C | 100 mm |
| June | 33°C | 20°C | 26.8°C | 87 mm |
| July | 36°C | 22°C | 29.2°C | 59 mm |
| August | 36°C | 22°C | 28.9°C | 56 mm |
| September | 32°C | 18°C | 24.6°C | 64 mm |
| October | 26°C | 11°C | 18.3°C | 98 mm |
| November | 19°C | 4°C | 11.8°C | 48 mm |
| December | 14°C | 0°C | 7.0°C | 40 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Archer City (17 miles away), gets 3 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416636; 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 Olney?
Normal highs sit between 65°F and 85°F in March, April, May, 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 USC00416636.
When is the last frost in Olney?
In Olney, the last spring frost (32°F) comes after March 31 in half of years and after April 18 in one year in ten; the first autumn frost comes before November 8 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 311 year in 10 after April 18; 9 in 10 after March 10
- First autumn frost, half of years before
- November 81 year in 10 before October 24; 9 in 10 before November 23
NOAA puts the median frost-free season at 222 days, and the season without a hard freeze (28°F) at 244 days.
A hard freeze (28°F) comes after March 17 in half of springs and before November 18 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Olney in zone 8a in ZIP code 76374, 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 USC00416636; 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 Olney?
In a normal year in Olney, 108 days a year reach 90°F (33 of them 100°F or more), 56 nights fall to 32°F or colder and 64 days bring measurable precipitation.
- Days at 90°F or more
- 108a normal year
- Days at 100°F or more
- 33a normal year
- Nights at 32°F or colder
- 56a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 64a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00416636.
How sunny is Olney?
Over a year 82% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Olney, 5.0 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (74%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 3.1 |
| February | 74% | 3.7 |
| March | 77% | 4.8 |
| April | 80% | 5.9 |
| May | 80% | 6.3 |
| June | 87% | 7.1 |
| July | 88% | 7.0 |
| August | 87% | 6.3 |
| September | 84% | 5.3 |
| October | 82% | 4.2 |
| November | 81% | 3.3 |
| December | 77% | 2.7 |
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 Olney need?
A normal year in Olney brings 2,796 heating degree days, 48% fewer than the median U.S. place (5,373), and 2,443 cooling degree days, 2.7 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,918 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 690 | 1 |
| February | 511 | 2 |
| March | 329 | 17 |
| April | 129 | 72 |
| May | 25 | 230 |
| June | 1 | 460 |
| July | 0 | 606 |
| August | 0 | 592 |
| September | 9 | 349 |
| October | 104 | 104 |
| November | 364 | 10 |
| December | 634 | 1 |
| Year (annual) | 2,796 | 2,443 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00416636. 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 Olney's climate compare?
Olney is warmer than 91 of the other 320 places with their own NOAA record in Texas, and wetter than 150. Across the 7,247 U.S. stations with normals, its annual mean of 63.9°F is warmer than 85%.
In the Köppen classification computed from these normals, Olney 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 Olney share this climate record?
Megargel 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.
- Megargel, TX178 people · 11 mi NW
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 Olney's climate
What is the coldest month in Olney?
January, with a normal high of 55°F and a normal low of 30°F. The warmest is July (97°F by day, 72°F at night).
Does it snow in Olney?
Yes. NOAA publishes no 1991-2020 snowfall normal for Olney's NOAA station; the nearest record that keeps one, Archer City (17 miles away), records 3 inches of snow in a normal year.
What is the rainiest month in Olney?
May, with 3.92 in of precipitation in a normal year; the driest is January with 1.41 in.
What plant hardiness zone is Olney in?
The USDA's 2023 map puts Olney in zone 8a in ZIP code 76374, the nearest ZIP area.
How late can frost come in Olney?
In half of years the last 32°F night comes after March 31; in one year in ten it comes after April 18. Waiting until April 18 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Texas climateThe statewide normals and every place in the state
- Archer City, TX17 miles from this station, 64.5°F a year
- Graham, TX21 miles from this station, 64.5°F a year
- Throckmorton (10 mi N), TX25 miles from this station, 63.9°F a year
- Lake Kemp, TX34 miles from this station, 63.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made