Napi Headquarters Weather in December
Average highs run from 46°F on December 1 to 40°F on December 31, and lows from 24°F to 19°F. Normal precipitation for the month is 0.55 in over about 5 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 42°F
- Average low
- 21°F
- Precipitation
- 0.55 in
- Snowfall
- 2.0 in
- Record high
- 67°FDec 1, 1999
- Record low
- -18°FDec 12, 1961
- Chance of a freeze
- 100%
- Daylight
- 9 h 50 min to 9 h 42 min
- Cloud cover
- 52%
- Humidity
- 63%
- Dew point
- 19°F
- Wind
- 7.2 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Dec 1 | 46°F | 24°F | 67°F 1999 | 8°F 2006 | 16% | 5% |
| Dec 2 | 46°F | 23°F | 62°F 2017 | 7°F 2006 | 16% | 6% |
| Dec 3 | 45°F | 23°F | 63°F 2017 | 5°F 2006 | 16% | 6% |
| Dec 4 | 45°F | 23°F | 60°F 1958 | 2°F 2009 | 17% | 6% |
| Dec 5 | 44°F | 23°F | 63°F 1958 | 4°F 1960 | 17% | 6% |
| Dec 6 | 44°F | 22°F | 60°F 1958 | 2°F 1953 | 17% | 6% |
| Dec 7 | 44°F | 22°F | 58°F 1949 | 5°F 1948 | 17% | 7% |
| Dec 8 | 43°F | 22°F | 61°F 1958 | -2°F 2005 | 17% | 7% |
| Dec 9 | 43°F | 22°F | 57°F 1950 | 0°F 1953 | 17% | 7% |
| Dec 10 | 43°F | 21°F | 58°F 2015 | -1°F 1951 | 17% | 7% |
| Dec 11 | 42°F | 21°F | 60°F 2022 | -16°F 1961 | 17% | 7% |
| Dec 12 | 42°F | 21°F | 58°F 2014 | -18°F 1961 | 17% | 7% |
| Dec 13 | 42°F | 21°F | 60°F 1948 | -14°F 1961 | 17% | 8% |
| Dec 14 | 42°F | 21°F | 59°F 2010 | 0°F 1964 | 17% | 8% |
| Dec 15 | 41°F | 21°F | 56°F 1950 | 1°F 1951 | 17% | 8% |
| Dec 16 | 41°F | 20°F | 57°F 2016 | 3°F 2005 | 17% | 8% |
| Dec 17 | 41°F | 20°F | 59°F 2025 | 2°F 2022 | 17% | 8% |
| Dec 18 | 41°F | 20°F | 62°F 2005 | 0°F 1967 | 18% | 8% |
| Dec 19 | 41°F | 20°F | 60°F 2025 | 3°F 1961 | 17% | 8% |
| Dec 20 | 40°F | 20°F | 60°F 2025 | 0°F 1951 | 17% | 8% |
| Dec 21 | 40°F | 20°F | 61°F 2025 | -8°F 1951 | 17% | 8% |
| Dec 22 | 40°F | 20°F | 64°F 2025 | -6°F 1968 | 17% | 8% |
| Dec 23 | 40°F | 20°F | 60°F 2025 | -6°F 1968 | 17% | 8% |
| Dec 24 | 40°F | 20°F | 62°F 2025 | -3°F 1961 | 17% | 8% |
| Dec 25 | 40°F | 20°F | 61°F 2025 | -2°F 1961 | 17% | 8% |
| Dec 26 | 40°F | 20°F | 59°F 2005 | -1°F 1961 | 17% | 8% |
| Dec 27 | 40°F | 19°F | 53°F 2017 | -3°F 1961 | 17% | 8% |
| Dec 28 | 40°F | 19°F | 56°F 2004 | -2°F 1961 | 17% | 8% |
| Dec 29 | 40°F | 19°F | 62°F 2004 | -2°F 1966 | 17% | 8% |
| Dec 30 | 40°F | 19°F | 57°F 1949 | -3°F 1966 | 17% | 8% |
| Dec 31 | 40°F | 19°F | 55°F 1949 | -1°F 2010 | 17% | 8% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:07 AM, sunset 4:57 PM
- December 31
- sunrise 7:25 AM, sunset 5:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00293142 (Farmington Ag Sci Cnt), public domain. Records: NOAA GHCN-Daily, station USW00023090, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.