McComb weather in December: McComb, Mississippi: normal highs, lows, rain and records for December
McComb in December has a normal high of 62°F and a normal low of 41°F, a daily mean of 51°F, falling from 64°F on the 1st to 60°F by the 31st. Measurable precipitation falls on 11 days in a normal December, 5.03 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 17°C and low of 5°C, 128 mm of precipitation and 0 cm of snow in December.
- NOAA stationMcComb/Pike County/John E Lewis Airport
- Station IDUSW00093919
- Location31.18°N 90.47°W
- Elevation413 ft (126 m)
- Population11,762
- Jan 60° 38°
- Feb 64° 42°
- Mar 71° 48°
- Apr 77° 54°
- May 84° 62°
- Jun 89° 69°
- Jul 91° 71°
- Aug 91° 71°
- Sep 87° 67°
- Oct 79° 56°
- Nov 69° 45°
- Dec 62° 41°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is McComb in December?
The normal high is 62°F and the normal low 41°F, for a daily mean of 51.1°F. December is 5.8°F cooler than November and 2.0°F warmer than January. December is the 11th warmest month of the year in McComb and the 7th wettest, and the snowiest. Across the month the normal high falls 4°F, from 64°F on December 1 to 60°F on December 31. From one year to the next December's mean temperature typically moves about 3.4°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 48°F and 55°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 36%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 64°F | 42°F | 31% | 21% |
| December 8 | 63°F | 42°F | 33% | 22% |
| December 15 | 62°F | 41°F | 34% | 23% |
| December 22 | 61°F | 40°F | 36% | 24% |
| December 31 | 60°F | 39°F | 36% | 23% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 64°F | 42°F | 31% | 21% | 10 h 20 min |
| December 2 | 64°F | 42°F | 31% | 21% | 10 h 20 min |
| December 3 | 64°F | 42°F | 32% | 22% | 10 h 20 min |
| December 4 | 64°F | 42°F | 32% | 22% | 10 h 10 min |
| December 5 | 64°F | 42°F | 32% | 22% | 10 h 10 min |
| December 6 | 63°F | 42°F | 32% | 22% | 10 h 10 min |
| December 7 | 63°F | 42°F | 33% | 22% | 10 h 10 min |
| December 8 | 63°F | 42°F | 33% | 22% | 10 h 10 min |
| December 9 | 63°F | 41°F | 33% | 22% | 10 h 10 min |
| December 10 | 63°F | 41°F | 33% | 23% | 10 h 10 min |
| December 11 | 62°F | 41°F | 34% | 23% | 10 h 10 min |
| December 12 | 62°F | 41°F | 34% | 23% | 10 h 10 min |
| December 13 | 62°F | 41°F | 34% | 23% | 10 h 10 min |
| December 14 | 62°F | 41°F | 34% | 23% | 10 h 10 min |
| December 15 | 62°F | 41°F | 34% | 23% | 10 h 10 min |
| December 16 | 62°F | 41°F | 35% | 23% | 10 h 10 min |
| December 17 | 61°F | 41°F | 35% | 23% | 10 h 10 min |
| December 18 | 61°F | 40°F | 35% | 23% | 10 h 10 min |
| December 19 | 61°F | 40°F | 35% | 23% | 10 h 10 min |
| December 20 | 61°F | 40°F | 35% | 24% | 10 h 10 min |
| December 21 | 61°F | 40°F | 35% | 24% | 10 h 10 min |
| December 22 | 61°F | 40°F | 36% | 24% | 10 h 10 min |
| December 23 | 61°F | 40°F | 36% | 24% | 10 h 10 min |
| December 24 | 60°F | 40°F | 36% | 24% | 10 h 10 min |
| December 25 | 60°F | 40°F | 36% | 24% | 10 h 10 min |
| December 26 | 60°F | 40°F | 36% | 24% | 10 h 10 min |
| December 27 | 60°F | 39°F | 36% | 24% | 10 h 10 min |
| December 28 | 60°F | 39°F | 36% | 24% | 10 h 10 min |
| December 29 | 60°F | 39°F | 36% | 23% | 10 h 10 min |
| December 30 | 60°F | 39°F | 36% | 23% | 10 h 10 min |
| December 31 | 60°F | 39°F | 36% | 23% | 10 h 10 min |
- Normal high
- 62°FDecember average
- Normal low
- 41°FDecember average
- Precipitation
- 5.03 inmonth total
- Days with precipitation
- 110.01 inch or more
- Snowfall
- 0.1 inmonth total
- Nights at 32°F or colder
- 8
- Daylight
- 10 h 20 min to 10 h 10 minDecember 1 to December 31
- Days at 70°F or more
- 9
- Days at 80°F or more
- 1
- Sunshine
- 69%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00093919; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in McComb in December?
On a given December day the chance of 0.01 inch or more is 34% on average, highest around December 27 (36%). In all, 5.03 in falls on 11 days of a normal December, 2 of them with an inch or more.
In a normal December in McComb, 8 nights fall to freezing and snowfall averages 0.1 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00093919.
How humid and windy is McComb in December?
At 3 p.m. the normal temperature is 57°F with 53% relative humidity and a dew point of 41°F; at 6 a.m. it is 44°F with 86% humidity. The wind averages 6.3 mph, most often from the northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 44°F | 40°F | 86% | 5.0 mph | – |
| 9 a.m. | 48°F | 41°F | 78% | 6.9 mph | – |
| noon | 55°F | 41°F | 59% | 8.5 mph | 49% |
| 3 p.m. | 57°F | 41°F | 53% | 8.5 mph | 53% |
| 6 p.m. | 51°F | 42°F | 72% | 4.9 mph | 59% |
| 9 p.m. | 48°F | 42°F | 79% | 5.5 mph | 60% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00093919. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for December in McComb?
The warmest December temperature on this station's record (since 1948) is 84°F, on December 31, 2021; the coldest is 4°F, on December 23, 1989. The wettest December brought 14.41 in (1971).
The December mean against the 1991-2020 normal of 51.1°F: 2021 61.9°F (+10.8), 2022 52.7°F (+1.6), 2023 51.7°F (+0.6), 2024 53.1°F (+2.0), 2025 53.2°F (+2.1). 5 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.9°F | +10.8°F | 3.70 in |
| 2022 | 52.7°F | +1.6°F | 6.11 in |
| 2023 | 51.7°F | +0.6°F | 4.45 in |
| 2024 | 53.1°F | +2.0°F | 5.74 in |
| 2025 | 53.2°F | +2.1°F | 1.49 in |
Source: records: ACIS, station USW00093919; recent months: ACIS, station USW00093919. Records and recent months use complete months only.
How does December in McComb compare across Mississippi?
Across the 81 places PlainClimate covers in Mississippi, December normal highs run from 52°F in Independence to 65°F in Pascagoula; McComb's is 62°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.