Calion, Arkansas climate: Normal weather by month, frost dates and records
Calion's normal year runs from 32°F January nights to 93°F July afternoons, with 50.5 inches of precipitation and less than an inch of snow (0.8 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.3°C, January lows of 0°C, July highs of 34°C, 1,283 mm of precipitation a year.
- NOAA stationCalion Lock and Dam
- Station IDUSC00031140
- Location33.31°N 92.48°W
- Elevation77 ft (24 m)
- From the center4 miles
- Population412
On October 14, the normal high in Calion is 78°F and the normal low 51°F, and the chance of measurable rain or snow is 20%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Calion.
- Jan 55° 32°
- Feb 59° 35°
- Mar 67° 43°
- Apr 75° 50°
- May 83° 60°
- Jun 89° 68°
- Jul 93° 71°
- Aug 93° 70°
- Sep 87° 63°
- Oct 77° 51°
- Nov 65° 40°
- Dec 57° 35°
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 Calion each month?
July is the warmest month, with normal highs of 93°F; January the coldest, with normal lows of 32°F. The most precipitation falls in December (5.53 in), the least in September (3.06 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 55°F | 32°F | 43.5°F | 4.29 | 9 | <1 | 17 | 10 h 10 min |
| February | 59°F | 35°F | 47.2°F | 4.25 | 8 | <1 | 13 | 11 h |
| March | 67°F | 43°F | 55.1°F | 5.11 | 9 | <1 | 5 | 12 h |
| April | 75°F | 50°F | 62.8°F | 5.50 | 8 | <1 | <1 | 13 h |
| May | 83°F | 60°F | 71.2°F | 4.57 | 9 | 3 | <1 | 13 h 50 min |
| June | 89°F | 68°F | 78.4°F | 4.10 | 7 | 15 | <1 | 14 h 20 min |
| July | 93°F | 71°F | 81.8°F | 3.22 | 7 | 23 | <1 | 14 h 10 min |
| August | 93°F | 70°F | 81.1°F | 3.45 | 7 | 22 | <1 | 13 h 30 min |
| September | 87°F | 63°F | 75.0°F | 3.06 | 5 | 12 | <1 | 12 h 30 min |
| October | 77°F | 51°F | 63.6°F | 3.78 | 6 | 2 | 1 | 11 h 20 min |
| November | 65°F | 40°F | 52.8°F | 3.66 | 8 | <1 | 7 | 10 h 30 min |
| December | 57°F | 35°F | 45.7°F | 5.53 | 8 | <1 | 16 | 10 h |
| Year (annual) | 75°F | 51°F | 63.2°F | 50.52 | 91 | 76 | 60 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 13°C | 0°C | 6.4°C | 109 mm |
| February | 15°C | 2°C | 8.4°C | 108 mm |
| March | 20°C | 6°C | 12.8°C | 130 mm |
| April | 24°C | 10°C | 17.1°C | 140 mm |
| May | 28°C | 16°C | 21.8°C | 116 mm |
| June | 32°C | 20°C | 25.8°C | 104 mm |
| July | 34°C | 22°C | 27.7°C | 82 mm |
| August | 34°C | 21°C | 27.3°C | 88 mm |
| September | 31°C | 17°C | 23.9°C | 78 mm |
| October | 25°C | 10°C | 17.6°C | 96 mm |
| November | 19°C | 5°C | 11.6°C | 93 mm |
| December | 14°C | 1°C | 7.6°C | 140 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00031140; 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 Calion?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, October 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 USC00031140.
When is the last frost in Calion?
In Calion, the last spring frost (32°F) comes after March 18 in half of years and after April 6 in one year in ten; the first autumn frost comes before November 7 in half of years and before October 24 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 181 year in 10 after April 6; 9 in 10 after February 28
- First autumn frost, half of years before
- November 71 year in 10 before October 24; 9 in 10 before November 27
NOAA puts the median frost-free season at 235 days, and the season without a hard freeze (28°F) at 262 days.
A hard freeze (28°F) comes after March 4 in half of springs and before November 21 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Calion in zone 8b in ZIP code 71724. By the map's own method, the average of each year's coldest night over 1991-2020, Calion's NOAA station is in zone 8b: the coldest night of a typical year reaches 16°F (20 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 USC00031140; 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 Calion?
In a normal year in Calion, 76 days a year reach 90°F (5 of them 100°F or more), 60 nights fall to 32°F or colder and 91 days bring measurable precipitation.
- Days at 90°F or more
- 76a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 60a normal year
- Days that stay below freezing
- 2high of 32°F or less
- Days with 0.01 inch of precipitation
- 91a normal year
The highest temperature in this station's record (since 1962) is 108°F, on September 2, 2000; the lowest is 0°F, on December 24, 1963.
The wettest calendar year on that record is 2020, with 74.23 in; the snowiest season is 2020–21, with 12.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00031140; records: ACIS (NOAA Regional Climate Centers), station USC00031140. Records use complete months only; a month missing more than three days is left out.
How sunny is Calion?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Calion, 4.5 kWh per square metre a day. August is the sunniest month (83%) and February the cloudiest (64%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 70% | 2.6 |
| February | 64% | 3.0 |
| March | 71% | 4.2 |
| April | 75% | 5.3 |
| May | 77% | 5.9 |
| June | 83% | 6.5 |
| July | 83% | 6.3 |
| August | 83% | 5.8 |
| September | 82% | 5.0 |
| October | 79% | 4.0 |
| November | 75% | 2.9 |
| December | 69% | 2.3 |
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 Calion need?
A normal year in Calion brings 2,754 heating degree days, 49% fewer than the median U.S. place (5,373), and 2,124 cooling degree days, 2.3 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 5,579 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 668 | 1 |
| February | 501 | 3 |
| March | 324 | 16 |
| April | 128 | 63 |
| May | 20 | 212 |
| June | 1 | 402 |
| July | 0 | 521 |
| August | 0 | 499 |
| September | 9 | 309 |
| October | 127 | 84 |
| November | 376 | 12 |
| December | 601 | 3 |
| Year (annual) | 2,754 | 2,124 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00031140. 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 Calion been warmer than normal lately?
2025 averaged 64.9°F, 1.7°F above the 1991-2020 normal of 63.2°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.6°F | +0.4°F | 57.40 |
| 2022 | 63.6°F | +0.4°F | 53.94 |
| 2024 | 65.7°F | +2.5°F | 60.41 |
| 2025 | 64.9°F | +1.7°F | 51.04 |
Source: observed years: ACIS, station USC00031140. A year counts only with all twelve months complete.
How does Calion's climate compare?
Calion is warmer than 76 of the other 85 places with their own NOAA record in Arkansas, and wetter than 28. Across the 7,247 U.S. stations with normals, its annual mean of 63.2°F is warmer than 83%.
In the Köppen classification computed from these normals, Calion 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 Calion 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.
- Hampton, AR1,157 people · 16 mi N
- Norphlet, AR719 people · 10 mi W
- Harrell, AR206 people · 15 mi N
- Lawson, AR106 people · 7 mi S
- Urbana, AR100 people · 10 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.
Questions about Calion's climate
What is the coldest month in Calion?
January, with a normal high of 55°F and a normal low of 32°F. The warmest is July (93°F by day, 71°F at night).
Does it snow in Calion?
Rarely: NOAA's normal is 0.8 inch a year.
What is the rainiest month in Calion?
December, with 5.53 in of precipitation in a normal year; the driest is September with 3.06 in.
What plant hardiness zone is Calion in?
The USDA's 2023 map puts Calion in zone 8b in ZIP code 71724. By the same method at Calion's NOAA station, the coldest night of a typical year reaches 16°F (20 years, 1991-2020): zone 8b.
How late can frost come in Calion?
In half of years the last 32°F night comes after March 18; in one year in ten it comes after April 6. Waiting until April 6 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Arkansas climateThe statewide normals and every place in the state
- El Dorado, AR20 miles from this station, 64.2°F a year
- Camden, AR28 miles from this station, 62.4°F a year
- Warren, AR30 miles from this station, 62.4°F a year
- Crossett, AR34 miles from this station, 65.1°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made