easeweather.com
Flagstaff (AZ)
Akron (OH)Albuquerque (NM)Alexandria (VA)Anaheim (CA)Anchorage (AK)Arlington (VA)Asheville (NC)Atlanta (GA)Atlantic City (NJ)Austin (TX)Baltimore (MD)Baton Rouge (LA)Birmingham (AL)Boston (MA)Brooklyn (NY)Buffalo (NY)Cape Coral (FL)Charlotte (NC)Chattanooga (TN)Chicago (IL)Cincinnati (OH)Cleveland (OH)Colorado Springs (CO)Columbus (OH)Corpus Christi (TX)Dallas (TX)Dayton (OH)Denver (CO)Des Moines (IA)Detroit (MI)El Paso (TX)Fairbanks (AK)
Flagstaff (AZ)
Fort Lauderdale (FL)Fort Wayne (IN)Fort Worth (TX)Gatlinburg (TN)Grand Rapids (MI)Harrisburg (PA)Honolulu (HI)Houston (TX)Huntsville (AL)Indianapolis (IN)Jackson (MS)Jacksonville (FL)Juneau (AK)Kansas City (MO)Ketchikan (AK)Key West (FL)Knoxville (TN)Las Vegas (NV)Lexington (KY)Lincoln (NE)Little Rock (AR)Los Angeles (CA)Louisville (KY)Madison (WI)Manhattan (NY)Memphis (TN)Miami (FL)Milwaukee (WI)Minneapolis (MN)Mobile (AL)Montgomery (AL)Nashville (TN)New Orleans (LA)New York City (NY)Newark (NJ)Norfolk (VA)Oklahoma City (OK)Omaha (NE)Orlando (FL)Philadelphia (PA)Phoenix (AZ)Pittsburgh (PA)Portland (OR)Richmond (VA)Riverside (CA)Sacramento (CA)Salt Lake City (UT)San Antonio (TX)San Diego (CA)San Francisco (CA)San Jose (CA)Savannah (GA)Seattle (WA)Skagway (AK)Springfield (MO)St. Louis (MO)St. Petersburg (FL)Tallahassee (FL)Tampa (FL)Toledo (OH)Traverse City (MI)Tulsa (OK)Tyler (TX)Vancouver (WA)Virginia Beach (VA)WashingtonWichita (KS)Winston-Salem (NC) More Locations
United States weather

Weather in Flagstaff, Arizona for December 2025

Your guide to Flagstaff weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 4 snowy days, Flagstaff usually enjoys a light touch of snow in December.
    According to Flagstaff snow forecast for December 2025, no snow is expected in the next 2 weeks.

    • Temperatures

  • Until now, December 2025 in Flagstaff has been nearly identical to the historical average, with a temperature of 9.6 °F (showing only a slight deviation of 0.4 °F).

  • The forecast for the coming days of December 2025 predicts a temperature of 13.7 °F , which is warmer than usual.

  • In general, the average temperature in Flagstaff at the beginning of December is 8.7 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 10.4 °F by the end of December.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
27
Dry days
Average rainy days
0
Rainy days
Average snowy days
4
Snow days
Average temperatures
8°/0°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
46 %
Avg humidity

Flagstaff Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Moderate or heavy snow with thunder
5°
2
Overcast
8°
3
Sunny
8°
4
Partly cloudy
8°
5
Sunny
10°
6
Sunny
12°
7
Sunny
10°
8
Sunny
9°
9
Sunny
8°
10
Sunny
9°
11
Overcast
13°
12
Partly cloudy
10°
13
Partly cloudy
10°
14
Overcast
15°
15
Partly cloudy
16°
16
Sunny
15°
17
Sunny
16°
18
Sunny
16°
19
Sunny
14°
20
Sunny
10°
21
Sunny
11°
22
Sunny
13°
23
Sunny
14°
24
Partly cloudy
12°
25
Sunny
14°
26
Sunny
14°
27
Sunny
12°
28
Partly cloudy
9°
29
Overcast
11°
30
Overcast
9°
31
Light snow
4°

Temperatures trend during December in Flagstaff

See the weather trend as well as the moving average line

December weather in Flagstaff day by day

Click on a date for more information
November January
Date Weather Temperatures Rain UV More
Dec. 1 Moderate or heavy snow with thunder
Moderate or heavy snow with thunder
 5° /-1° 0.4 mm 2
Dec. 2 Overcast
Overcast
 8° /-2° 0 mm 2
Dec. 3 Sunny
Sunny
 8° /-1° 2.6 mm 3
Dec. 4 Partly cloudy
Partly cloudy
 8° /0° 0 mm 3
Dec. 5 Sunny
Sunny
 10° /0° 0 mm 3
Dec. 6 Sunny
Sunny
 12° /1° 0 mm 4
Dec. 7 Sunny
Sunny
 10° /1° 0 mm 4
Dec. 8 Sunny
Sunny
 9° /0° 0 mm 3
Dec. 9 Sunny
Sunny
 8° /-3° 0 mm 3
Dec. 10 Sunny
Sunny
 9° /-2° 0 mm 3
Dec. 11 Overcast
Overcast
 13° /1° 0 mm 4
Dec. 12 Partly cloudy
Partly cloudy
 10° /2° 0 mm 4
Dec. 13 Partly cloudy
Partly cloudy
 10° /1° 0 mm 3
Dec. 14 Overcast
Overcast
 15° /5° 0 mm 0.6
Dec. 15 Partly cloudy
Partly cloudy
 16° /7° 0 mm 0.6
Dec. 16 Sunny
Sunny
 15° /6° 0 mm 0.7
Dec. 17 Sunny
Sunny
 16° /6° 0 mm 0.7
Dec. 18 Sunny
Sunny
 16° /6° 0 mm 0.6
Dec. 19 Sunny
Sunny
 14° /6° 0 mm 0
Dec. 20 Sunny
Sunny
 10° /3° 0 mm 3
Dec. 21 Sunny
Sunny
 11° /2° 0 mm 3
Dec. 22 Sunny
Sunny
 13° /4° 0 mm 3
Dec. 23 Sunny
Sunny
 14° /4° 0 mm 3
Dec. 24 Partly cloudy
Partly cloudy
 12° /6° 0 mm 3
Dec. 25 Sunny
Sunny
 14° /5° 0 mm 3
Dec. 26 Sunny
Sunny
 14° /5° 0 mm 3
Dec. 27 Sunny
Sunny
 12° /3° 0 mm 3
Dec. 28 Partly cloudy
Partly cloudy
 9° /0° 0 mm 3
Dec. 29 Overcast
Overcast
 11° /2° 0 mm 3
Dec. 30 Overcast
Overcast
 9° /0° 0 mm 3
Dec. 31 Light snow
Light snow
 4° /-2° 0.1 mm 2
Next
Important Notice
Our weather forecast for Flagstaff in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Flagstaff forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Flagstaff in December - FAQ

What are the expected maximum and minimum temperatures in Flagstaff during December?
Prepare for cooler days with highs just around 8° and colder nights, dipping below 0°.
How much rainfall should be expected in Flagstaff during December?
Expect minimal rainfall in Flagstaff during December, with a total of 13 mm over approximately 0 days. This minimal precipitation is unlikely to significantly impact plans.
Will it snow in Flagstaff in December 2025?
Flagstaff experiences an average snowfall of 8.705 cm during December, occurring over 4 days.
What are the typical wind conditions in Flagstaff during December?
The average wind speed in Flagstaff during December is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

December rainfall patterns in Flagstaff

Explore the daily rainfall trends and prepare for Flagstaffs December weather 💧

Quick links

More Flagstaff weather pages
You are here
Location coordinates Where is Flagstaff?

Get accurate weather forecasts for Flagstaff, located at latitude 35.198 and longitude -111.651. Stay updated with localized weather information tailored for Flagstaff.

Found a mistake?
We appreciate your attention to details. Tell us here.