Alva, Oklahoma climate: Normal weather by month, frost dates and records
Alva's normal year runs from 23°F January nights to 95°F July afternoons, with 30.3 inches of precipitation and 11 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 14.8°C, January lows of −5°C, July highs of 35°C, 770 mm of precipitation a year.
- NOAA stationAlva (1 mi W)
- Station IDUSC00340193
- Location36.80°N 98.69°W
- Elevation1,464 ft (446 m)
- Population4,962
On October 23, the normal high in Alva is 70°F and the normal low 43°F, and the chance of measurable rain or snow is 14%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Alva.
- Jan 47° 23°
- Feb 52° 26°
- Mar 61° 35°
- Apr 71° 44°
- May 80° 56°
- Jun 90° 66°
- Jul 95° 71°
- Aug 93° 68°
- Sep 86° 60°
- Oct 73° 46°
- Nov 59° 34°
- Dec 48° 25°
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 Alva each month?
July is the warmest month, with normal highs of 95°F; January the coldest, with normal lows of 23°F. The most precipitation falls in June (4.51 in), the least in January (0.99 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 47°F | 23°F | 34.8°F | 0.99 | 2.8 | 3 | <1 | 27 | 9 h 50 min |
| February | 52°F | 26°F | 38.8°F | 1.22 | 1.7 | 4 | <1 | 21 | 10 h 50 min |
| March | 61°F | 35°F | 47.8°F | 2.44 | 2.6 | 6 | <1 | 14 | 11 h 50 min |
| April | 71°F | 44°F | 57.2°F | 2.93 | 0.0 | 6 | 1 | 3 | 13 h 10 min |
| May | 80°F | 56°F | 67.9°F | 4.05 | 0.0 | 8 | 6 | <1 | 14 h 10 min |
| June | 90°F | 66°F | 77.9°F | 4.51 | 0.0 | 8 | 17 | <1 | 14 h 40 min |
| July | 95°F | 71°F | 82.9°F | 3.31 | 0.0 | 6 | 26 | <1 | 14 h 30 min |
| August | 93°F | 68°F | 80.4°F | 3.60 | 0.0 | 7 | 23 | <1 | 13 h 40 min |
| September | 86°F | 60°F | 72.9°F | 2.02 | 0.0 | 5 | 12 | <1 | 12 h 30 min |
| October | 73°F | 46°F | 59.4°F | 2.45 | 0.0 | 5 | 2 | 2 | 11 h 20 min |
| November | 59°F | 34°F | 46.7°F | 1.49 | 0.1 | 4 | <1 | 14 | 10 h 10 min |
| December | 48°F | 25°F | 36.4°F | 1.31 | 4.1 | 4 | <1 | 26 | 9 h 40 min |
| Year (annual) | 71°F | 46°F | 58.6°F | 30.32 | 11.3 | 65 | 88 | 106 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 8°C | −5°C | 1.6°C | 25 mm | 7 cm |
| February | 11°C | −3°C | 3.8°C | 31 mm | 4 cm |
| March | 16°C | 1°C | 8.8°C | 62 mm | 7 cm |
| April | 22°C | 7°C | 14.0°C | 74 mm | 0 cm |
| May | 27°C | 13°C | 19.9°C | 103 mm | 0 cm |
| June | 32°C | 19°C | 25.5°C | 115 mm | 0 cm |
| July | 35°C | 21°C | 28.3°C | 84 mm | 0 cm |
| August | 34°C | 20°C | 26.9°C | 91 mm | 0 cm |
| September | 30°C | 15°C | 22.7°C | 51 mm | 0 cm |
| October | 23°C | 8°C | 15.2°C | 62 mm | 0 cm |
| November | 15°C | 1°C | 8.2°C | 38 mm | 0 cm |
| December | 9°C | −4°C | 2.4°C | 33 mm | 10 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00340193; 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 Alva?
Normal highs sit between 65°F and 85°F in April, May and October. Of those, October has the fewest days with rain (5).
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 USC00340193.
When is the last frost in Alva?
In Alva, the last spring frost (32°F) comes after April 10 in half of years and after April 25 in one year in ten; the first autumn frost comes before October 28 in half of years and before October 14 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
- April 101 year in 10 after April 25; 9 in 10 after March 26
- First autumn frost, half of years before
- October 281 year in 10 before October 14; 9 in 10 before November 10
NOAA puts the median frost-free season at 199 days, and the season without a hard freeze (28°F) at 218 days.
A hard freeze (28°F) comes after March 31 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Alva in zone 7a in ZIP code 73746, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Alva's NOAA station is in zone 7a: the coldest night of a typical year reaches 2°F (17 complete years).
Frost dates for every NOAA station in Oklahoma · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00340193; 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 Alva?
In a normal year in Alva, 88 days a year reach 90°F (25 of them 100°F or more), 106 nights fall to 32°F or colder and 65 days bring measurable precipitation.
- Days at 90°F or more
- 88a normal year
- Days at 100°F or more
- 25a normal year
- Nights at 32°F or colder
- 106a normal year
- Days that stay below freezing
- 10high of 32°F or less
- Days with 0.01 inch of precipitation
- 65a normal year
- Days with 1 inch of snow or more
- 4a normal year
The highest temperature in this station's record (since 1894) is 120°F, on July 18, 1936; the lowest is −16°F, on February 8, 1933.
The wettest calendar year on that record is 1915, with 45.75 in; the snowiest season is 1972–73, with 35.6 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00340193; records: ACIS (NOAA Regional Climate Centers), station USC00340193. Records use complete months only; a month missing more than three days is left out.
How sunny is Alva?
Over a year 82% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Alva, 4.8 kWh per square metre a day. July is the sunniest month (88%) and February the cloudiest (75%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 79% | 2.8 |
| February | 75% | 3.5 |
| March | 77% | 4.6 |
| April | 78% | 5.7 |
| May | 79% | 6.3 |
| June | 86% | 7.1 |
| July | 88% | 7.0 |
| August | 86% | 6.2 |
| September | 85% | 5.2 |
| October | 81% | 4.0 |
| November | 81% | 3.0 |
| December | 76% | 2.4 |
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 Alva need?
A normal year in Alva brings 4,209 heating degree days, 22% fewer than the median U.S. place (5,373), and 1,908 cooling degree days, 2.1 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 4,807 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 935 | 0 |
| February | 735 | 0 |
| March | 537 | 3 |
| April | 259 | 25 |
| May | 61 | 151 |
| June | 3 | 390 |
| July | 0 | 553 |
| August | 1 | 478 |
| September | 24 | 261 |
| October | 217 | 44 |
| November | 551 | 2 |
| December | 886 | 0 |
| Year (annual) | 4,209 | 1,908 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00340193. 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 Alva's climate compare?
Alva is warmer than 18 of the other 133 places with their own NOAA record in Oklahoma, and wetter than 26. Across the 7,247 U.S. stations with normals, its annual mean of 58.6°F is warmer than 71%.
In the Köppen classification computed from these normals, Alva 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 Alva share this climate record?
4 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.
- Hardtner, KS163 people · 15 mi N
- Dacoma, OK110 people · 12 mi SE
- Avard, OK13 people · 9 mi SW
- Hopeton, OK12 people · 8 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 Alva's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Alva. This page uses Alva (1 mi W); the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Alva 7 mi SSW Mesonet USC00340198 | 7 mi S | 1,440 ft | 58.8°F | 24°F | 95°F | – | – | April 11 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Alva's climate
What is the coldest month in Alva?
January, with a normal high of 47°F and a normal low of 23°F. The warmest is July (95°F by day, 71°F at night).
Does it snow in Alva?
Yes: 11 inches in a normal year, falling on 4 days with 0.1 inch or more, the most in December (4.1 inches).
What is the rainiest month in Alva?
June, with 4.51 in of precipitation in a normal year; the driest is January with 0.99 in.
What plant hardiness zone is Alva in?
The USDA's 2023 map puts Alva in zone 7a in ZIP code 73746, the nearest ZIP area. By the same method at Alva's NOAA station, the coldest night of a typical year reaches 2°F (17 years, 1991-2020): zone 7a.
How late can frost come in Alva?
In half of years the last 32°F night comes after April 10; in one year in ten it comes after April 25. Waiting until April 25 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Oklahoma climateThe statewide normals and every place in the state
- Cherokee, OK19 miles from this station, 59.1°F a year
- Kiowa, KS19 miles from this station, 57.8°F a year
- Waynoka, OK19 miles from this station, 58.9°F a year
- Freedom, OK24 miles from this station, 57.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made