Byars, Oklahoma climate: Normal weather by month, frost dates and records
Byars's normal year runs from 30°F January nights to 93°F August afternoons, with 41.0 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.5°C, January lows of −1°C, August highs of 34°C, 1,042 mm of precipitation a year.
- NOAA stationByars 3 mi ESE Mesonet
- Station IDUSC00341283
- Location34.85°N 97.00°W
- Elevation1,131 ft (345 m)
- Population204
On October 14, the normal high in Byars is 75°F and the normal low 53°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Byars.
- Jan 51° 30°
- Feb 55° 34°
- Mar 63° 43°
- Apr 72° 50°
- May 79° 60°
- Jun 87° 68°
- Jul 92° 72°
- Aug 93° 71°
- Sep 84° 63°
- Oct 74° 52°
- Nov 63° 41°
- Dec 52° 33°
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 Byars each month?
August is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 30°F. The most precipitation falls in May (5.40 in), the least in January (1.85 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 51°F | 30°F | 40.7°F | 1.85 | – | <1 | 19 | 10 h |
| February | 55°F | 34°F | 44.5°F | 2.09 | – | <1 | 14 | 10 h 50 min |
| March | 63°F | 43°F | 52.8°F | 3.33 | – | <1 | 5 | 11 h 50 min |
| April | 72°F | 50°F | 61.3°F | 3.97 | – | <1 | 1 | 13 h |
| May | 79°F | 60°F | 69.2°F | 5.40 | – | 1 | <1 | 14 h |
| June | 87°F | 68°F | 77.5°F | 4.74 | – | 15 | <1 | 14 h 30 min |
| July | 92°F | 72°F | 81.7°F | 3.75 | – | 22 | <1 | 14 h 20 min |
| August | 93°F | 71°F | 81.8°F | 3.16 | – | 22 | <1 | 13 h 30 min |
| September | 84°F | 63°F | 73.5°F | 4.29 | – | 10 | <1 | 12 h 30 min |
| October | 74°F | 52°F | 63.1°F | 3.79 | – | 1 | 1 | 11 h 20 min |
| November | 63°F | 41°F | 52.0°F | 2.36 | – | <1 | 6 | 10 h 20 min |
| December | 52°F | 33°F | 42.4°F | 2.30 | – | <1 | 16 | 9 h 50 min |
| Year (annual) | 72°F | 51°F | 61.7°F | 41.03 | – | 71 | 62 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 11°C | −1°C | 4.8°C | 47 mm |
| February | 13°C | 1°C | 6.9°C | 53 mm |
| March | 17°C | 6°C | 11.6°C | 85 mm |
| April | 22°C | 10°C | 16.3°C | 101 mm |
| May | 26°C | 15°C | 20.7°C | 137 mm |
| June | 31°C | 20°C | 25.3°C | 120 mm |
| July | 33°C | 22°C | 27.6°C | 95 mm |
| August | 34°C | 22°C | 27.7°C | 80 mm |
| September | 29°C | 17°C | 23.1°C | 109 mm |
| October | 23°C | 11°C | 17.3°C | 96 mm |
| November | 17°C | 5°C | 11.1°C | 60 mm |
| December | 11°C | 0°C | 5.8°C | 58 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Pauls Valley (4 mi WSW) (18 miles away), gets 4 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00341283; 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 Byars?
Normal highs sit between 65°F and 85°F in April, May, September and October.
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 USC00341283.
When is the last frost in Byars?
In Byars, the last spring frost (32°F) comes after March 25 in half of years and after April 13 in one year in ten; the first autumn frost comes before November 8 in half of years and before October 23 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 251 year in 10 after April 13; 9 in 10 after March 3
- First autumn frost, half of years before
- November 81 year in 10 before October 23; 9 in 10 before November 24
NOAA puts the median frost-free season at 228 days, and the season without a hard freeze (28°F) at 253 days.
A hard freeze (28°F) comes after March 10 in half of springs and before November 18 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Byars in zone 7b in ZIP code 74831, the nearest ZIP area.
Frost dates for every NOAA station in Oklahoma · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00341283; 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 Byars?
In a normal year in Byars, 71 days a year reach 90°F (9 of them 100°F or more) and 62 nights fall to 32°F or colder.
- Days at 90°F or more
- 71a normal year
- Days at 100°F or more
- 9a normal year
- Nights at 32°F or colder
- 62a normal year
- Days that stay below freezing
- 6high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00341283.
How sunny is Byars?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Byars, 4.8 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (72%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 77% | 2.9 |
| February | 72% | 3.5 |
| March | 74% | 4.6 |
| April | 77% | 5.6 |
| May | 76% | 6.0 |
| June | 85% | 6.9 |
| July | 88% | 6.9 |
| August | 87% | 6.3 |
| September | 83% | 5.2 |
| October | 81% | 4.0 |
| November | 79% | 3.1 |
| December | 74% | 2.5 |
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 Byars need?
A normal year in Byars brings 3,189 heating degree days, 41% fewer than the median U.S. place (5,373), and 2,027 cooling degree days, 2.2 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 5,327 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 753 | 0 |
| February | 578 | 3 |
| March | 393 | 15 |
| April | 161 | 50 |
| May | 43 | 175 |
| June | 0 | 377 |
| July | 0 | 519 |
| August | 0 | 520 |
| September | 16 | 272 |
| October | 146 | 87 |
| November | 399 | 8 |
| December | 699 | 1 |
| Year (annual) | 3,189 | 2,027 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00341283. 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 Byars been warmer than normal lately?
2025 averaged 63.1°F, 1.4°F above the 1991-2020 normal of 61.7°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.2°F | +0.5°F | 34.51 |
| 2022 | 62.5°F | +0.8°F | 30.93 |
| 2023 | 63.4°F | +1.7°F | – |
| 2024 | 64.4°F | +2.7°F | 43.40 |
| 2025 | 63.1°F | +1.4°F | 38.83 |
Source: observed years: ACIS, station USC00341283. A year counts only with all twelve months complete.
How does Byars's climate compare?
Byars is warmer than 106 of the other 133 places with their own NOAA record in Oklahoma, and wetter than 64. Across the 7,247 U.S. stations with normals, its annual mean of 61.7°F is warmer than 79%.
In the Köppen classification computed from these normals, Byars 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 Byars share this climate record?
5 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.
- Stratford, OK1,427 people · 4 mi SE
- Asher, OK376 people · 11 mi NE
- Wanette, OK311 people · 9 mi N
- Rosedale, OK68 people · 11 mi NW
- Vanoss, OK42 people · 10 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 Byars's climate
What is the coldest month in Byars?
January, with a normal high of 51°F and a normal low of 30°F. The warmest is August (93°F by day, 71°F at night).
Does it snow in Byars?
Yes. NOAA publishes no 1991-2020 snowfall normal for Byars's NOAA station; the nearest record that keeps one, Pauls Valley (4 mi WSW) (18 miles away), records 4 inches of snow in a normal year.
What is the rainiest month in Byars?
May, with 5.40 in of precipitation in a normal year; the driest is January with 1.85 in.
What plant hardiness zone is Byars in?
The USDA's 2023 map puts Byars in zone 7b in ZIP code 74831, the nearest ZIP area.
How late can frost come in Byars?
In half of years the last 32°F night comes after March 25; in one year in ten it comes after April 13. Waiting until April 13 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oklahoma climateThe statewide normals and every place in the state
- Pauls Valley, OK16 miles from this station, 62.2°F a year
- Ada, OK19 miles from this station, 61.6°F a year
- Sulphur, OK20 miles from this station, 61.3°F a year
- Purcell, OK24 miles from this station, 61.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made