St. Peters weather in December: St. Peters, Missouri: normal highs, lows, rain and records for December
St. Peters in December has a normal high of 44°F and a normal low of 27°F, a daily mean of 35°F, falling from 48°F on the 1st to 40°F by the 31st. Measurable precipitation falls on 9 days in a normal December, 2.56 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 6°C and low of −3°C, 65 mm of precipitation and 7 cm of snow in December.
- NOAA stationSt Peters (2 mi SE)
- Station IDUSC00237475
- Location38.77°N 90.59°W
- Elevation575 ft (175 m)
- From the center1 miles
- Population61,398
- Jan 39° 21°
- Feb 45° 25°
- Mar 56° 33°
- Apr 67° 43°
- May 76° 54°
- Jun 84° 63°
- Jul 88° 68°
- Aug 87° 65°
- Sep 81° 57°
- Oct 69° 45°
- Nov 55° 35°
- Dec 44° 27°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is St. Peters in December?
The normal high is 44°F and the normal low 27°F, for a daily mean of 35.0°F. December is 9.9°F cooler than November and 4.8°F warmer than January. December is the 10th warmest month of the year in St. Peters and the 10th wettest. Across the month the normal high falls 8°F, from 48°F on December 1 to 40°F on December 31. From one year to the next December's mean temperature typically moves about 4.2°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 31°F and 39°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 29%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 48°F | 30°F | 29% | 19% |
| December 8 | 46°F | 29°F | 29% | 18% |
| December 15 | 44°F | 27°F | 29% | 18% |
| December 22 | 42°F | 25°F | 29% | 17% |
| December 31 | 40°F | 23°F | 28% | 15% |
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 | 48°F | 30°F | 29% | 19% | 9 h 40 min |
| December 2 | 48°F | 30°F | 29% | 19% | 9 h 40 min |
| December 3 | 48°F | 30°F | 29% | 19% | 9 h 40 min |
| December 4 | 47°F | 30°F | 29% | 19% | 9 h 40 min |
| December 5 | 47°F | 29°F | 29% | 19% | 9 h 40 min |
| December 6 | 46°F | 29°F | 29% | 19% | 9 h 40 min |
| December 7 | 46°F | 29°F | 29% | 19% | 9 h 30 min |
| December 8 | 46°F | 29°F | 29% | 18% | 9 h 30 min |
| December 9 | 45°F | 28°F | 29% | 18% | 9 h 30 min |
| December 10 | 45°F | 28°F | 29% | 18% | 9 h 30 min |
| December 11 | 45°F | 28°F | 29% | 18% | 9 h 30 min |
| December 12 | 45°F | 27°F | 29% | 18% | 9 h 30 min |
| December 13 | 44°F | 27°F | 29% | 18% | 9 h 30 min |
| December 14 | 44°F | 27°F | 29% | 18% | 9 h 30 min |
| December 15 | 44°F | 27°F | 29% | 18% | 9 h 30 min |
| December 16 | 43°F | 26°F | 29% | 18% | 9 h 30 min |
| December 17 | 43°F | 26°F | 29% | 18% | 9 h 30 min |
| December 18 | 43°F | 26°F | 29% | 18% | 9 h 30 min |
| December 19 | 43°F | 26°F | 29% | 17% | 9 h 30 min |
| December 20 | 42°F | 25°F | 29% | 17% | 9 h 30 min |
| December 21 | 42°F | 25°F | 29% | 17% | 9 h 30 min |
| December 22 | 42°F | 25°F | 29% | 17% | 9 h 30 min |
| December 23 | 42°F | 25°F | 29% | 17% | 9 h 30 min |
| December 24 | 41°F | 25°F | 28% | 17% | 9 h 30 min |
| December 25 | 41°F | 24°F | 28% | 16% | 9 h 30 min |
| December 26 | 41°F | 24°F | 28% | 16% | 9 h 30 min |
| December 27 | 41°F | 24°F | 28% | 16% | 9 h 30 min |
| December 28 | 41°F | 24°F | 28% | 16% | 9 h 30 min |
| December 29 | 40°F | 23°F | 28% | 16% | 9 h 30 min |
| December 30 | 40°F | 23°F | 28% | 16% | 9 h 30 min |
| December 31 | 40°F | 23°F | 28% | 15% | 9 h 30 min |
- Normal high
- 44°FDecember average
- Normal low
- 27°FDecember average
- Precipitation
- 2.56 inmonth total
- Days with precipitation
- 90.01 inch or more
- Snowfall
- 2.7 inmonth total
- Nights at 32°F or colder
- 22
- Daylight
- 9 h 40 min to 9 h 30 minDecember 1 to December 31
- Days at 70°F or more
- 1
- Sunshine
- 66%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00237475; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in St. Peters in December?
On a given December day the chance of 0.01 inch or more is 29% on average, highest around December 14 (29%). In all, 2.56 in falls on 9 days of a normal December, 1 of them with an inch or more.
In a normal December in St. Peters, 22 nights fall to freezing, 5 days stay below freezing all day and snowfall averages 2.7 inches.
Snow falls on 2 days in a normal December, and an inch or more covers the ground on 4 days.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00237475.
How does December in St. Peters compare across Missouri?
Across the 134 places PlainClimate covers in Missouri, December normal highs run from 37°F in Tarkio to 49°F in Neosho; St. Peters's is 44°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.