Morrilton, Arkansas climate: Normal weather by month, frost dates and records
Morrilton's normal year runs from 29°F January nights to 93°F July afternoons, with 51.2 inches of precipitation and 2 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.2°C, January lows of −2°C, July highs of 34°C, 1,300 mm of precipitation a year.
- NOAA stationMorrilton
- Station IDUSC00034938
- Location35.16°N 92.77°W
- Elevation340 ft (104 m)
- Population7,185
On October 22, the normal high in Morrilton is 73°F and the normal low 47°F, and the chance of measurable rain or snow is 27%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Morrilton.
- Jan 50° 29°
- Feb 55° 32°
- Mar 64° 40°
- Apr 73° 48°
- May 80° 58°
- Jun 88° 67°
- Jul 93° 71°
- Aug 93° 69°
- Sep 86° 61°
- Oct 75° 49°
- Nov 63° 39°
- Dec 53° 31°
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 Morrilton each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 29°F. The most precipitation falls in May (5.52 in), the least in September (3.30 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 50°F | 29°F | 39.5°F | 3.64 | 0.5 | 9 | <1 | 22 | 10 h |
| February | 55°F | 32°F | 43.5°F | 3.81 | 0.8 | 9 | <1 | 17 | 10 h 50 min |
| March | 64°F | 40°F | 51.7°F | 5.06 | 0.7 | 11 | <1 | 9 | 11 h 50 min |
| April | 73°F | 48°F | 60.5°F | 5.29 | 0.0 | 9 | <1 | 1 | 13 h |
| May | 80°F | 58°F | 69.2°F | 5.52 | 0.0 | 11 | 2 | <1 | 14 h |
| June | 88°F | 67°F | 77.8°F | 3.56 | 0.0 | 8 | 12 | <1 | 14 h 30 min |
| July | 93°F | 71°F | 81.7°F | 3.82 | 0.0 | 8 | 23 | <1 | 14 h 20 min |
| August | 93°F | 69°F | 80.7°F | 3.69 | 0.0 | 8 | 22 | <1 | 13 h 30 min |
| September | 86°F | 61°F | 73.5°F | 3.30 | 0.0 | 7 | 10 | <1 | 12 h 30 min |
| October | 75°F | 49°F | 62.1°F | 3.93 | 0.0 | 8 | 1 | 2 | 11 h 20 min |
| November | 63°F | 39°F | 50.7°F | 4.85 | 0.1 | 9 | <1 | 10 | 10 h 20 min |
| December | 53°F | 31°F | 42.0°F | 4.73 | 0.3 | 10 | <1 | 20 | 9 h 50 min |
| Year (annual) | 73°F | 50°F | 61.1°F | 51.20 | 2.4 | 105 | 70 | 81 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 10°C | −2°C | 4.2°C | 92 mm | 1 cm |
| February | 13°C | 0°C | 6.4°C | 97 mm | 2 cm |
| March | 18°C | 4°C | 10.9°C | 129 mm | 2 cm |
| April | 23°C | 9°C | 15.8°C | 134 mm | 0 cm |
| May | 27°C | 15°C | 20.7°C | 140 mm | 0 cm |
| June | 31°C | 20°C | 25.4°C | 90 mm | 0 cm |
| July | 34°C | 22°C | 27.6°C | 97 mm | 0 cm |
| August | 34°C | 20°C | 27.1°C | 94 mm | 0 cm |
| September | 30°C | 16°C | 23.1°C | 84 mm | 0 cm |
| October | 24°C | 9°C | 16.7°C | 100 mm | 0 cm |
| November | 17°C | 4°C | 10.4°C | 123 mm | 0 cm |
| December | 11°C | 0°C | 5.6°C | 120 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00034938; 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 Morrilton?
Normal highs sit between 65°F and 85°F in April, May and October. Of those, October has the fewest days with rain (8).
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 USC00034938.
When is the last frost in Morrilton?
In Morrilton, the last spring frost (32°F) comes after March 30 in half of years and after April 15 in one year in ten; the first autumn frost comes before November 2 in half of years and before October 19 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 301 year in 10 after April 15; 9 in 10 after March 11
- First autumn frost, half of years before
- November 21 year in 10 before October 19; 9 in 10 before November 20
NOAA puts the median frost-free season at 219 days, and the season without a hard freeze (28°F) at 245 days.
A hard freeze (28°F) comes after March 14 in half of springs and before November 14 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Morrilton in zone 8a in ZIP code 72110, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Morrilton's NOAA station is in zone 8a: the coldest night of a typical year reaches 10°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 USC00034938; 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 Morrilton?
In a normal year in Morrilton, 70 days a year reach 90°F (7 of them 100°F or more), 81 nights fall to 32°F or colder and 105 days bring measurable precipitation.
- Days at 90°F or more
- 70a normal year
- Days at 100°F or more
- 7a normal year
- Nights at 32°F or colder
- 81a normal year
- Days that stay below freezing
- 4high of 32°F or less
- Days with 0.01 inch of precipitation
- 105a normal year
- Days with 1 inch of snow or more
- 1a normal year
The highest temperature in this station's record (since 1919) is 115°F, on July 31, 1986; the lowest is −15°F, on February 2, 1951.
The wettest calendar year on that record is 2009, with 78.54 in; the snowiest season is 1959–60, with 15.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00034938; records: ACIS (NOAA Regional Climate Centers), station USC00034938. Records use complete months only; a month missing more than three days is left out.
How sunny is Morrilton?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Morrilton, 4.4 kWh per square metre a day. August is the sunniest month (82%) and February the cloudiest (66%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.5 |
| February | 66% | 3.0 |
| March | 70% | 4.1 |
| April | 73% | 5.2 |
| May | 74% | 5.7 |
| June | 81% | 6.5 |
| July | 81% | 6.3 |
| August | 82% | 5.7 |
| September | 81% | 4.9 |
| October | 77% | 3.7 |
| November | 74% | 2.7 |
| December | 70% | 2.2 |
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 Morrilton need?
A normal year in Morrilton brings 3,359 heating degree days, 37% fewer than the median U.S. place (5,373), and 1,955 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 5,141 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 789 | 0 |
| February | 603 | 1 |
| March | 422 | 9 |
| April | 179 | 44 |
| May | 40 | 170 |
| June | 1 | 385 |
| July | 0 | 518 |
| August | 0 | 487 |
| September | 14 | 268 |
| October | 158 | 66 |
| November | 438 | 8 |
| December | 715 | 1 |
| Year (annual) | 3,359 | 1,955 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00034938. 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 Morrilton been warmer than normal lately?
2024 averaged 63.8°F, 2.7°F above the 1991-2020 normal of 61.1°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 61.5°F | +0.4°F | 48.89 | 13.0 |
| 2022 | 61.4°F | +0.3°F | 49.29 | 8.0 |
| 2023 | 63.5°F | +2.4°F | 53.03 | 0.5 |
| 2024 | 63.8°F | +2.7°F | 58.87 | 3.2 |
Over 68 complete years from 1922 to 2025, the station's annual mean temperature rose at a fitted 0.7°F per century (+0.04°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00034938; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Morrilton's climate compare?
Morrilton is warmer than 40 of the other 85 places with their own NOAA record in Arkansas, and wetter than 40. Across the 7,247 U.S. stations with normals, its annual mean of 61.1°F is warmer than 77%.
In the Köppen classification computed from these normals, Morrilton 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 Morrilton share this climate record?
8 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.
- Perryville, AR1,406 people · 10 mi S
- Oppelo, AR763 people · 4 mi S
- Plumerville, AR749 people · 7 mi E
- Perry, AR267 people · 8 mi S
- Houston, AR149 people · 9 mi SE
- Adona, AR147 people · 11 mi SW
- Hattieville, AR88 people · 10 mi N
- Jerusalem, AR44 people · 18 mi N
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 Morrilton's climate
What is the coldest month in Morrilton?
January, with a normal high of 50°F and a normal low of 29°F. The warmest is July (93°F by day, 71°F at night).
Does it snow in Morrilton?
Yes: 2 inches in a normal year, falling on 2 days with 0.1 inch or more, the most in February (0.8 inches).
What is the rainiest month in Morrilton?
May, with 5.52 in of precipitation in a normal year; the driest is September with 3.30 in.
What plant hardiness zone is Morrilton in?
The USDA's 2023 map puts Morrilton in zone 8a in ZIP code 72110, the nearest ZIP area. By the same method at Morrilton's NOAA station, the coldest night of a typical year reaches 10°F (25 years, 1991-2020): zone 8a.
How late can frost come in Morrilton?
In half of years the last 32°F night comes after March 30; in one year in ten it comes after April 15. Waiting until April 15 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arkansas climateThe statewide normals and every place in the state
- Conway, AR16 miles from this station, 60.0°F a year
- Russellville, AR20 miles from this station, 61.4°F a year
- Dardanelle, AR23 miles from this station, 61.8°F a year
- Greenbrier, AR24 miles from this station, 59.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made