Weather Almanac: Flagstaff, AZ 86004

🗓️ Historical norms for September 2025

August October

Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

September avg. precipitation

🌧️ 1.02"

September days below freezing

📉 ≈0.0 days

Average September lows 55°F – 59°F

USDA Zone

Annual extreme lows -5°F to 0°F

Last Spring Frost (36°F)

🌷 May 3

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First Fall Frost (36°F)

🍂 Oct 16

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F: Forecast

H: Normal High Temp

L: Normal Low Temp

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Mon. September 1 Labor Day

🌅 5:58 a.m.

H: 83°F – 95°F

L: 57°F – 66°F

🌇 6:51 p.m.

Tue. September 2

🌅 5:58 a.m.

H: 83°F – 94°F

L: 57°F – 66°F

🌇 6:50 p.m.

Wed. September 3

🌅 5:59 a.m.

H: 83°F – 94°F

L: 57°F – 66°F

🌇 6:49 p.m.

Thu. September 4

🌅 6:00 a.m.

H: 82°F – 94°F

L: 56°F – 66°F

🌇 6:47 p.m.

Fri. September 5

🌅 6:01 a.m.

H: 82°F – 94°F

L: 56°F – 65°F

🌇 6:46 p.m.

Sat. September 6

🌅 6:01 a.m.

H: 82°F – 94°F

L: 56°F – 65°F

🌇 6:44 p.m.

Sun. September 7

🌅 6:02 a.m.

H: 82°F – 93°F

L: 55°F – 65°F

🌇 6:43 p.m.

Mon. September 8

🌅 6:03 a.m.

H: 81°F – 93°F

L: 55°F – 65°F

🌇 6:42 p.m.

Tue. September 9

🌅 6:04 a.m.

H: 81°F – 93°F

L: 55°F – 64°F

🌇 6:40 p.m.

Wed. September 10

🌅 6:04 a.m.

H: 80°F – 93°F

L: 54°F – 64°F

🌇 6:39 p.m.

Thu. September 11

🌅 6:05 a.m.

H: 80°F – 92°F

L: 54°F – 64°F

🌇 6:37 p.m.

Fri. September 12

🌅 6:06 a.m.

H: 80°F – 92°F

L: 54°F – 63°F

🌇 6:36 p.m.

Sat. September 13

🌅 6:07 a.m.

H: 79°F – 92°F

L: 53°F – 63°F

🌇 6:34 p.m.

Sun. September 14 Holy Cross

🌅 6:07 a.m.

H: 79°F – 91°F

L: 53°F – 63°F

🌇 6:33 p.m.

Mon. September 15

🌅 6:08 a.m.

H: 79°F – 91°F

L: 52°F – 62°F

🌇 6:31 p.m.

Tue. September 16

🌅 6:09 a.m.

H: 78°F – 91°F

L: 52°F – 62°F

🌇 6:30 p.m.

Wed. September 17

🌅 6:10 a.m.

H: 78°F – 91°F

L: 52°F – 62°F

🌇 6:28 p.m.

Thu. September 18

🌅 6:10 a.m.

H: 77°F – 90°F

L: 51°F – 61°F

🌇 6:27 p.m.

Fri. September 19

🌅 6:11 a.m.

H: 77°F – 90°F

L: 51°F – 61°F

🌇 6:26 p.m.

Sat. September 20

🌅 6:12 a.m.

H: 76°F – 89°F

L: 50°F – 61°F

🌇 6:24 p.m.

Sun. September 21

🌅 6:13 a.m.

H: 76°F – 89°F

L: 50°F – 60°F

🌇 6:23 p.m.

Mon. September 22 Autumn Equinox

🌅 6:13 a.m.

H: 76°F – 89°F

L: 49°F – 60°F

🌇 6:21 p.m.

Tue. September 23

🌅 6:14 a.m.

H: 75°F – 88°F

L: 49°F – 59°F

🌇 6:20 p.m.

Wed. September 24

🌅 6:15 a.m.

H: 75°F – 88°F

L: 49°F – 59°F

🌇 6:18 p.m.

Thu. September 25

🌅 6:16 a.m.

H: 74°F – 88°F

L: 48°F – 59°F

🌇 6:17 p.m.

Fri. September 26

🌅 6:16 a.m.

H: 74°F – 87°F

L: 48°F – 58°F

🌇 6:15 p.m.

Sat. September 27

🌅 6:17 a.m.

H: 73°F – 87°F

L: 47°F – 58°F

🌇 6:14 p.m.

Sun. September 28

🌅 6:18 a.m.

H: 73°F – 86°F

L: 47°F – 57°F

🌇 6:13 p.m.

Mon. September 29

🌅 6:19 a.m.

H: 72°F – 86°F

L: 46°F – 57°F

🌇 6:11 p.m.

Tue. September 30

🌅 6:19 a.m.

H: 72°F – 86°F

L: 46°F – 57°F

🌇 6:10 p.m.

August October

Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Temperature climatic data from weather station: WUPATKI NM (USC00029542)

Precipitation climatic data from weather station: WUPATKI NM (USC00029542)

Agricultural climatic data from weather station: WUPATKI NM (USC00029542)