Calico Rock, Arkansas climate: Normal weather by month, frost dates and records
Calico Rock's normal year runs from 25°F January nights to 88°F July afternoons, with 48.9 inches of precipitation and 7 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.7°C, January lows of −4°C, July highs of 31°C, 1,242 mm of precipitation a year.
- NOAA stationCalico Rock (2 mi WSW)
- Station IDUSC00031132
- Location36.11°N 92.16°W
- Elevation350 ft (107 m)
- Population2,021
On October 22, the normal high in Calico Rock is 69°F and the normal low 43°F, and the chance of measurable rain or snow is 25%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Calico Rock.
- Jan 46° 25°
- Feb 51° 27°
- Mar 60° 35°
- Apr 70° 43°
- May 76° 54°
- Jun 84° 62°
- Jul 88° 65°
- Aug 88° 64°
- Sep 81° 57°
- Oct 71° 45°
- Nov 59° 35°
- Dec 49° 28°
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 Calico Rock each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 25°F. The most precipitation falls in April (5.47 in), the least in February (3.27 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 46°F | 25°F | 35.4°F | 3.35 | 2.0 | 8 | <1 | 24 | 10 h |
| February | 51°F | 27°F | 38.9°F | 3.27 | 1.9 | 7 | <1 | 20 | 10 h 50 min |
| March | 60°F | 35°F | 47.3°F | 4.75 | 1.7 | 10 | <1 | 14 | 11 h 50 min |
| April | 70°F | 43°F | 56.4°F | 5.47 | 0.0 | 8 | <1 | 4 | 13 h |
| May | 76°F | 54°F | 64.8°F | 5.13 | 0.0 | 10 | 1 | <1 | 14 h |
| June | 84°F | 62°F | 72.7°F | 3.61 | 0.0 | 8 | 7 | <1 | 14 h 40 min |
| July | 88°F | 65°F | 76.5°F | 3.82 | 0.0 | 8 | 17 | <1 | 14 h 20 min |
| August | 88°F | 64°F | 75.8°F | 3.63 | 0.0 | 8 | 15 | <1 | 13 h 30 min |
| September | 81°F | 57°F | 68.7°F | 3.76 | 0.0 | 6 | 5 | <1 | 12 h 30 min |
| October | 71°F | 45°F | 58.1°F | 3.83 | 0.0 | 8 | <1 | 3 | 11 h 20 min |
| November | 59°F | 35°F | 46.8°F | 4.34 | 0.0 | 7 | <1 | 13 | 10 h 20 min |
| December | 49°F | 28°F | 38.2°F | 3.93 | 1.1 | 8 | <1 | 22 | 9 h 40 min |
| Year (annual) | 68°F | 45°F | 56.6°F | 48.89 | 6.7 | 95 | 45 | 100 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 8°C | −4°C | 1.9°C | 85 mm | 5 cm |
| February | 10°C | −3°C | 3.8°C | 83 mm | 5 cm |
| March | 16°C | 1°C | 8.5°C | 121 mm | 4 cm |
| April | 21°C | 6°C | 13.6°C | 139 mm | 0 cm |
| May | 24°C | 12°C | 18.2°C | 130 mm | 0 cm |
| June | 29°C | 16°C | 22.6°C | 92 mm | 0 cm |
| July | 31°C | 19°C | 24.7°C | 97 mm | 0 cm |
| August | 31°C | 18°C | 24.3°C | 92 mm | 0 cm |
| September | 27°C | 14°C | 20.4°C | 96 mm | 0 cm |
| October | 22°C | 7°C | 14.5°C | 97 mm | 0 cm |
| November | 15°C | 2°C | 8.2°C | 110 mm | 0 cm |
| December | 9°C | −2°C | 3.4°C | 100 mm | 3 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00031132; 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 Calico Rock?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (6).
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 USC00031132.
When is the last frost in Calico Rock?
In Calico Rock, the last spring frost (32°F) comes after April 14 in half of years and after April 29 in one year in ten; the first autumn frost comes before October 28 in half of years and before October 12 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 141 year in 10 after April 29; 9 in 10 after March 30
- First autumn frost, half of years before
- October 281 year in 10 before October 12; 9 in 10 before November 8
NOAA puts the median frost-free season at 196 days, and the season without a hard freeze (28°F) at 219 days.
A hard freeze (28°F) comes after April 1 in half of springs and before November 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Calico Rock in zone 7b in ZIP code 72519, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Calico Rock's NOAA station is in zone 7b: the coldest night of a typical year reaches 5°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 USC00031132; 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 Calico Rock?
In a normal year in Calico Rock, 45 days a year reach 90°F (3 of them 100°F or more), 100 nights fall to 32°F or colder and 95 days bring measurable precipitation.
- Days at 90°F or more
- 45a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 100a normal year
- Days that stay below freezing
- 7high of 32°F or less
- Days with 0.01 inch of precipitation
- 95a normal year
- Days with 1 inch of snow or more
- 2a normal year
The highest temperature in this station's record (since 1915) is 114°F, on August 10, 1934; the lowest is −20°F, on January 13, 1918.
The wettest calendar year on that record is 1927, with 67.65 in; the snowiest season is 1978–79, with 26.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00031132; records: ACIS (NOAA Regional Climate Centers), station USC00031132. Records use complete months only; a month missing more than three days is left out.
How sunny is Calico Rock?
Over a year 76% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Calico Rock, 4.4 kWh per square metre a day. June is the sunniest month (82%) and February the cloudiest (67%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.4 |
| February | 67% | 3.0 |
| March | 70% | 4.1 |
| April | 73% | 5.2 |
| May | 74% | 5.8 |
| June | 82% | 6.6 |
| July | 82% | 6.3 |
| August | 81% | 5.7 |
| September | 81% | 4.9 |
| October | 76% | 3.7 |
| November | 74% | 2.7 |
| December | 69% | 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 Calico Rock need?
A normal year in Calico Rock brings 4,227 heating degree days, 21% fewer than the median U.S. place (5,373), and 1,207 cooling degree days, 33% more than 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 4,023 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 918 | 1 |
| February | 730 | 0 |
| March | 553 | 3 |
| April | 275 | 17 |
| May | 90 | 82 |
| June | 5 | 236 |
| July | 0 | 355 |
| August | 1 | 337 |
| September | 39 | 148 |
| October | 239 | 25 |
| November | 547 | 2 |
| December | 831 | 0 |
| Year (annual) | 4,227 | 1,207 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00031132. 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 Calico Rock been warmer than normal lately?
2025 averaged 59.3°F, 2.7°F above the 1991-2020 normal of 56.6°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 59.6°F | +3.0°F | 42.10 | 11.5 |
| 2023 | 59.8°F | +3.2°F | 57.72 | 4.0 |
| 2024 | 60.1°F | +3.5°F | 53.45 | 7.0 |
| 2025 | 59.3°F | +2.7°F | 48.89 | 11.5 |
Over 41 complete years from 1968 to 2025, the station's annual mean temperature rose at a fitted 5.1°F per century (+0.28°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00031132; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Calico Rock's climate compare?
Calico Rock is warmer than 3 of the other 85 places with their own NOAA record in Arkansas, and wetter than 17. Across the 7,247 U.S. stations with normals, its annual mean of 56.6°F is warmer than 65%.
In the Köppen classification computed from these normals, Calico Rock 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 Calico Rock 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.
- Norfork, AR480 people · 9 mi NW
- Pineville, AR163 people · 5 mi NE
- Fifty-Six, AR162 people · 11 mi S
- Mount Olive, AR0 people · 8 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 Calico Rock's climate
What is the coldest month in Calico Rock?
January, with a normal high of 46°F and a normal low of 25°F. The warmest is July (88°F by day, 65°F at night).
Does it snow in Calico Rock?
Yes: 7 inches in a normal year, falling on 3 days with 0.1 inch or more, the most in January (2.0 inches).
What is the rainiest month in Calico Rock?
April, with 5.47 in of precipitation in a normal year; the driest is February with 3.27 in.
What plant hardiness zone is Calico Rock in?
The USDA's 2023 map puts Calico Rock in zone 7b in ZIP code 72519, the nearest ZIP area. By the same method at Calico Rock's NOAA station, the coldest night of a typical year reaches 5°F (25 years, 1991-2020): zone 7b.
How late can frost come in Calico Rock?
In half of years the last 32°F night comes after April 14; in one year in ten it comes after April 29. Waiting until April 29 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arkansas climateThe statewide normals and every place in the state
- Mountain View, AR19 miles from this station, 59.7°F a year
- Mountain Home (1 mi NNW), AR21 miles from this station, 58.2°F a year
- Mountain Home, AR25 miles from this station, 58.8°F a year
- Salem, AR26 miles from this station, 57.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made