Keiser, Arkansas climate: Normal weather by month, frost dates and records
Keiser's normal year runs from 31°F January nights to 91°F July afternoons, with 52.2 inches of precipitation and 2 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.4°C, January lows of −1°C, July highs of 33°C, 1,325 mm of precipitation a year.
- NOAA stationKeiser
- Station IDUSC00033821
- Location35.69°N 90.10°W
- Elevation232 ft (71 m)
- From the centerunder 1 mile
- Population698
On October 23, the normal high in Keiser is 72°F and the normal low 48°F, and the chance of measurable rain or snow is 28%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Keiser.
- Jan 47° 31°
- Feb 52° 34°
- Mar 61° 42°
- Apr 72° 52°
- May 81° 62°
- Jun 89° 70°
- Jul 91° 73°
- Aug 90° 71°
- Sep 85° 63°
- Oct 75° 51°
- Nov 61° 41°
- Dec 51° 34°
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 Keiser each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 31°F. The most precipitation falls in May (5.52 in), the least in August (3.03 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 47°F | 31°F | 39.0°F | 4.10 | 0.6 | 10 | <1 | 20 | 10 h |
| February | 52°F | 34°F | 43.0°F | 4.50 | 0.9 | 9 | <1 | 14 | 10 h 50 min |
| March | 61°F | 42°F | 51.4°F | 5.02 | 0.3 | 11 | <1 | 6 | 11 h 50 min |
| April | 72°F | 52°F | 61.8°F | 5.47 | 0.0 | 10 | <1 | 1 | 13 h |
| May | 81°F | 62°F | 71.5°F | 5.52 | 0.0 | 10 | 4 | <1 | 14 h |
| June | 89°F | 70°F | 79.7°F | 4.05 | 0.0 | 8 | 16 | <1 | 14 h 30 min |
| July | 91°F | 73°F | 82.1°F | 3.94 | 0.0 | 8 | 21 | <1 | 14 h 20 min |
| August | 90°F | 71°F | 80.5°F | 3.03 | 0.0 | 7 | 18 | <1 | 13 h 30 min |
| September | 85°F | 63°F | 73.8°F | 3.34 | 0.0 | 7 | 10 | <1 | 12 h 30 min |
| October | 75°F | 51°F | 62.7°F | 3.98 | 0.0 | 8 | 1 | 1 | 11 h 20 min |
| November | 61°F | 41°F | 50.9°F | 4.33 | 0.0 | 9 | <1 | 7 | 10 h 20 min |
| December | 51°F | 34°F | 42.4°F | 4.90 | 0.0 | 10 | <1 | 16 | 9 h 50 min |
| Year (annual) | 71°F | 52°F | 61.6°F | 52.18 | 1.8 | 107 | 71 | 64 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 8°C | −1°C | 3.9°C | 104 mm | 2 cm |
| February | 11°C | 1°C | 6.1°C | 114 mm | 2 cm |
| March | 16°C | 5°C | 10.8°C | 128 mm | 1 cm |
| April | 22°C | 11°C | 16.6°C | 139 mm | 0 cm |
| May | 27°C | 17°C | 21.9°C | 140 mm | 0 cm |
| June | 32°C | 21°C | 26.5°C | 103 mm | 0 cm |
| July | 33°C | 23°C | 27.8°C | 100 mm | 0 cm |
| August | 32°C | 21°C | 26.9°C | 77 mm | 0 cm |
| September | 29°C | 17°C | 23.2°C | 85 mm | 0 cm |
| October | 24°C | 11°C | 17.1°C | 101 mm | 0 cm |
| November | 16°C | 5°C | 10.5°C | 110 mm | 0 cm |
| December | 10°C | 1°C | 5.8°C | 124 mm | 0 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00033821; 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 Keiser?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, September has the fewest days with rain (7).
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 USC00033821.
When is the last frost in Keiser?
In Keiser, the last spring frost (32°F) comes after March 23 in half of years and after April 8 in one year in ten; the first autumn frost comes before November 6 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 231 year in 10 after April 8; 9 in 10 after March 4
- First autumn frost, half of years before
- November 61 year in 10 before October 23; 9 in 10 before November 27
NOAA puts the median frost-free season at 229 days, and the season without a hard freeze (28°F) at 256 days.
A hard freeze (28°F) comes after March 8 in half of springs and before November 22 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Keiser in zone 8a in ZIP code 72351, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Keiser's NOAA station is in zone 8a: the coldest night of a typical year reaches 11°F (25 complete years).
Frost dates for every NOAA station in Arkansas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00033821; 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 Keiser?
In a normal year in Keiser, 71 days a year reach 90°F (2 of them 100°F or more), 64 nights fall to 32°F or colder and 107 days bring measurable precipitation.
- Days at 90°F or more
- 71a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 64a normal year
- Days that stay below freezing
- 6high of 32°F or less
- Days with 0.01 inch of precipitation
- 107a normal year
- Days with 1 inch of snow or more
- 1a normal year
The highest temperature in this station's record (since 1959) is 106°F, on July 17, 1980; the lowest is −10°F, on December 24, 1963.
The wettest calendar year on that record is 2019, with 73.95 in; the snowiest season is 1967–68, with 14.5 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00033821; records: ACIS (NOAA Regional Climate Centers), station USC00033821. Records use complete months only; a month missing more than three days is left out.
How sunny is Keiser?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Keiser, 4.5 kWh per square metre a day. August is the sunniest month (84%) and February the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.4 |
| February | 66% | 3.0 |
| March | 70% | 4.1 |
| April | 75% | 5.3 |
| May | 77% | 5.9 |
| June | 84% | 6.7 |
| July | 84% | 6.4 |
| August | 84% | 5.8 |
| September | 82% | 5.0 |
| October | 78% | 3.8 |
| November | 75% | 2.8 |
| December | 68% | 2.1 |
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 Keiser need?
A normal year in Keiser brings 3,357 heating degree days, 38% fewer than the median U.S. place (5,373), and 2,133 cooling degree days, 2.4 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 5,363 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 806 | 0 |
| February | 616 | 1 |
| March | 434 | 11 |
| April | 166 | 68 |
| May | 30 | 230 |
| June | 1 | 442 |
| July | 0 | 530 |
| August | 0 | 479 |
| September | 15 | 279 |
| October | 153 | 82 |
| November | 434 | 9 |
| December | 701 | 1 |
| Year (annual) | 3,357 | 2,133 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00033821. 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 Keiser been warmer than normal lately?
2025 averaged 61.7°F, 0.1°F above the 1991-2020 normal of 61.6°F. 2 of the 3 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 59.7°F | −1.9°F | 53.02 | 0.0 |
| 2023 | 61.9°F | +0.3°F | 57.06 | 0.0 |
| 2025 | 61.7°F | +0.1°F | – | 6.5 |
Over 50 complete years from 1963 to 2025, the station's annual mean temperature rose at a fitted 3.5°F per century (+0.20°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00033821; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Keiser's climate compare?
Keiser is warmer than 47 of the other 85 places with their own NOAA record in Arkansas, and wetter than 52. Across the 7,247 U.S. stations with normals, its annual mean of 61.6°F is warmer than 79%.
In the Köppen classification computed from these normals, Keiser 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 Keiser share this climate record?
15 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.
- Osceola, AR6,496 people · 6 mi E
- Manila, AR3,736 people · 14 mi N
- Lepanto, AR1,638 people · 14 mi W
- Caraway, AR1,095 people · 14 mi W
- Wilson, AR704 people · 9 mi S
- Joiner, AR469 people · 13 mi S
- Dyess, AR316 people · 9 mi SW
- Etowah, AR240 people · 8 mi W
- Randolph, TN216 people · 17 mi SE
- Dell, AR183 people · 12 mi N
- Bassett, AR117 people · 11 mi S
- Marie, AR97 people · 5 mi S
- Rivervale, AR68 people · 14 mi W
- Birdsong, AR31 people · 18 mi SW
- Victoria, AR18 people · 5 mi NE
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 Keiser's climate
What is the coldest month in Keiser?
January, with a normal high of 47°F and a normal low of 31°F. The warmest is July (91°F by day, 73°F at night).
Does it snow in Keiser?
Yes: 2 inches in a normal year, falling on 1 days with 0.1 inch or more, the most in February (0.9 inches).
What is the rainiest month in Keiser?
May, with 5.52 in of precipitation in a normal year; the driest is August with 3.03 in.
What plant hardiness zone is Keiser in?
The USDA's 2023 map puts Keiser in zone 8a in ZIP code 72351, the nearest ZIP area. By the same method at Keiser's NOAA station, the coldest night of a typical year reaches 11°F (25 years, 1991-2020): zone 8a.
How late can frost come in Keiser?
In half of years the last 32°F night comes after March 23; in one year in ten it comes after April 8. Waiting until April 8 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arkansas climateThe statewide normals and every place in the state
- Blytheville, AR23 miles from this station, 61.1°F a year
- Covington, TN24 miles from this station, 59.2°F a year
- Jonesboro, AR32 miles from this station, 60.9°F a year
- Paragould, AR33 miles from this station, 59.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made