Casa Grande weather in December: Casa Grande, Arizona: normal highs, lows, rain and records for December
Casa Grande in December has a normal high of 68°F and a normal low of 38°F, a daily mean of 53°F, falling from 70°F on the 1st to 67°F by the 31st. Measurable precipitation falls on 4 days in a normal December, 0.73 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 20°C and low of 4°C, 19 mm of precipitation in December.
- NOAA stationCasa Grande
- Station IDUSC00021306
- Location32.89°N 111.71°W
- Elevation1,400 ft (427 m)
- From the center3 miles
- Population68,927
- Jan 69° 39°
- Feb 73° 42°
- Mar 80° 47°
- Apr 88° 53°
- May 96° 60°
- Jun 106° 70°
- Jul 107° 78°
- Aug 105° 77°
- Sep 100° 71°
- Oct 91° 57°
- Nov 78° 45°
- Dec 68° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Casa Grande in December?
The normal high is 68°F and the normal low 38°F, for a daily mean of 53.0°F. December is 8.4°F cooler than November and 0.9°F cooler than January. December is the 12th warmest month of the year in Casa Grande and the 6th wettest. Across the month the normal high falls 3°F, from 70°F on December 1 to 67°F on December 31. From one year to the next December's mean temperature typically moves about 2.4°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 51°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 12%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 70°F | 40°F | 9% | 5% |
| December 8 | 68°F | 39°F | 10% | 6% |
| December 15 | 67°F | 38°F | 11% | 6% |
| December 22 | 67°F | 38°F | 12% | 6% |
| December 31 | 67°F | 38°F | 12% | 6% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 20)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 70°F | 40°F | 9% | 5% | 10 h 10 min |
| December 2 | 70°F | 40°F | 9% | 6% | 10 h 10 min |
| December 3 | 70°F | 40°F | 9% | 6% | 10 h 10 min |
| December 4 | 69°F | 40°F | 9% | 6% | 10 h 10 min |
| December 5 | 69°F | 39°F | 9% | 6% | 10 h 10 min |
| December 6 | 69°F | 39°F | 10% | 6% | 10 h 10 min |
| December 7 | 69°F | 39°F | 10% | 6% | 10 h |
| December 8 | 68°F | 39°F | 10% | 6% | 10 h |
| December 9 | 68°F | 39°F | 10% | 6% | 10 h |
| December 10 | 68°F | 39°F | 10% | 6% | 10 h |
| December 11 | 68°F | 38°F | 10% | 6% | 10 h |
| December 12 | 68°F | 38°F | 11% | 6% | 10 h |
| December 13 | 67°F | 38°F | 11% | 6% | 10 h |
| December 14 | 67°F | 38°F | 11% | 6% | 10 h |
| December 15 | 67°F | 38°F | 11% | 6% | 10 h |
| December 16 | 67°F | 38°F | 11% | 6% | 10 h |
| December 17 | 67°F | 38°F | 11% | 6% | 10 h |
| December 18 | 67°F | 38°F | 12% | 6% | 10 h |
| December 19 | 67°F | 38°F | 12% | 6% | 10 h |
| December 20 | 67°F | 38°F | 12% | 6% | 10 h |
| December 21 | 67°F | 38°F | 12% | 6% | 10 h |
| December 22 | 67°F | 38°F | 12% | 6% | 10 h |
| December 23 | 67°F | 38°F | 12% | 6% | 10 h |
| December 24 | 67°F | 38°F | 12% | 6% | 10 h |
| December 25 | 67°F | 38°F | 12% | 6% | 10 h |
| December 26 | 67°F | 38°F | 12% | 6% | 10 h |
| December 27 | 67°F | 38°F | 12% | 6% | 10 h |
| December 28 | 67°F | 38°F | 12% | 6% | 10 h |
| December 29 | 67°F | 38°F | 12% | 6% | 10 h |
| December 30 | 67°F | 38°F | 12% | 6% | 10 h |
| December 31 | 67°F | 38°F | 12% | 6% | 10 h |
- Normal high
- 68°FDecember average
- Normal low
- 38°FDecember average
- Precipitation
- 0.73 inmonth total
- Days with precipitation
- 40.01 inch or more
- Nights at 32°F or colder
- 7
- Daylight
- 10 h 10 min to 10 hDecember 1 to December 31
- Days at 70°F or more
- 12
- Days at 80°F or more
- 1
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00021306; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Casa Grande in December?
On a given December day the chance of 0.01 inch or more is 11% on average, highest around December 23 (12%). In all, 0.73 in falls on 4 days of a normal December.
In a normal December in Casa Grande, 7 nights fall to freezing.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00021306.
What are the records for December in Casa Grande?
The warmest December temperature on this station's record (since 1903) is 91°F, on December 6, 1907; the coldest is 15°F, on December 28, 1954. The wettest December brought 4.71 in (1965).
The December mean against the 1991-2020 normal of 53.0°F: 2021 57.1°F (+4.1), 2022 53.0°F (at normal), 2023 54.2°F (+1.2), 2024 56.6°F (+3.6). 3 of 4 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 57.1°F | +4.1°F | 1.01 in |
| 2022 | 53.0°F | at normal | 2.98 in |
| 2023 | 54.2°F | +1.2°F | 1.48 in |
| 2024 | 56.6°F | +3.6°F | 0.00 in |
Source: records: ACIS, station USC00021306; recent months: ACIS, station USC00021306. Records and recent months use complete months only.
How does December in Casa Grande compare across Arizona?
Across the 97 places PlainClimate covers in Arizona, December normal highs run from 41°F in Lukachukai to 70°F in Gila Bend; Casa Grande's is 68°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Casa Grande in November78°F by day, 45°F at night
- Casa Grande in January69°F by day, 39°F at night
- Casa Grande through the yearEvery month, frost dates, records and recent years
- Arizona in DecemberThe statewide normal and the warmest and coolest places
- Gila Bend: Arizona's warmest Decembernormal high 70°F