Weather Almanac: Phoenix, AZ 85018

🗓️ Historical norms for September 2025

August October

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

September avg. precipitation

🌧️ 0.64"

September days below freezing

📉 ≈0.0 days

Average September lows 75°F – 79°F

USDA Zone

10a

Annual extreme lows 30°F to 35°F

Last Spring Frost (36°F)

🌷 Jan 25

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First Fall Frost (36°F)

🍂 Dec 13

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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

🌅 6:02 a.m.

H: 98°F – 109°F

L: 76°F – 86°F

🌇 6:52 p.m.

Tue. September 2

🌅 6:03 a.m.

H: 98°F – 109°F

L: 76°F – 86°F

🌇 6:51 p.m.

Wed. September 3

🌅 6:03 a.m.

H: 98°F – 109°F

L: 76°F – 85°F

🌇 6:50 p.m.

Thu. September 4

🌅 6:04 a.m.

H: 98°F – 108°F

L: 76°F – 85°F

🌇 6:48 p.m.

Fri. September 5

🌅 6:05 a.m.

H: 97°F – 108°F

L: 75°F – 85°F

🌇 6:47 p.m.

Sat. September 6

🌅 6:05 a.m.

H: 97°F – 108°F

L: 75°F – 85°F

🌇 6:46 p.m.

Sun. September 7

🌅 6:06 a.m.

H: 97°F – 108°F

L: 75°F – 85°F

🌇 6:44 p.m.

Mon. September 8

🌅 6:07 a.m.

H: 97°F – 108°F

L: 75°F – 84°F

🌇 6:43 p.m.

Tue. September 9

🌅 6:07 a.m.

H: 97°F – 108°F

L: 75°F – 84°F

🌇 6:42 p.m.

Wed. September 10

🌅 6:08 a.m.

H: 96°F – 107°F

L: 74°F – 84°F

🌇 6:40 p.m.

Thu. September 11

🌅 6:09 a.m.

H: 96°F – 107°F

L: 74°F – 84°F

🌇 6:39 p.m.

Fri. September 12

🌅 6:09 a.m.

H: 96°F – 107°F

L: 74°F – 83°F

🌇 6:37 p.m.

Sat. September 13

🌅 6:10 a.m.

H: 95°F – 107°F

L: 73°F – 83°F

🌇 6:36 p.m.

Sun. September 14 Holy Cross

🌅 6:11 a.m.

H: 95°F – 106°F

L: 73°F – 83°F

🌇 6:35 p.m.

Mon. September 15

🌅 6:11 a.m.

H: 95°F – 106°F

L: 73°F – 82°F

🌇 6:33 p.m.

Tue. September 16

🌅 6:12 a.m.

H: 94°F – 106°F

L: 72°F – 82°F

🌇 6:32 p.m.

Wed. September 17

🌅 6:13 a.m.

H: 94°F – 106°F

L: 72°F – 82°F

🌇 6:31 p.m.

Thu. September 18

🌅 6:13 a.m.

H: 94°F – 105°F

L: 71°F – 81°F

🌇 6:29 p.m.

Fri. September 19

🌅 6:14 a.m.

H: 93°F – 105°F

L: 71°F – 81°F

🌇 6:28 p.m.

Sat. September 20

🌅 6:15 a.m.

H: 93°F – 105°F

L: 71°F – 81°F

🌇 6:26 p.m.

Sun. September 21

🌅 6:15 a.m.

H: 92°F – 104°F

L: 70°F – 80°F

🌇 6:25 p.m.

Mon. September 22 Autumn Equinox

🌅 6:16 a.m.

H: 92°F – 104°F

L: 70°F – 80°F

🌇 6:24 p.m.

Tue. September 23

🌅 6:17 a.m.

H: 92°F – 104°F

L: 69°F – 80°F

🌇 6:22 p.m.

Wed. September 24

🌅 6:17 a.m.

H: 91°F – 103°F

L: 69°F – 79°F

🌇 6:21 p.m.

Thu. September 25

🌅 6:18 a.m.

H: 91°F – 103°F

L: 69°F – 79°F

🌇 6:19 p.m.

Fri. September 26

🌅 6:19 a.m.

H: 90°F – 103°F

L: 68°F – 78°F

🌇 6:18 p.m.

Sat. September 27

🌅 6:19 a.m.

H: 90°F – 102°F

L: 68°F – 78°F

🌇 6:17 p.m.

Sun. September 28

🌅 6:20 a.m.

H: 89°F – 102°F

L: 67°F – 78°F

🌇 6:15 p.m.

Mon. September 29

🌅 6:21 a.m.

H: 89°F – 102°F

L: 67°F – 77°F

🌇 6:14 p.m.

Tue. September 30

🌅 6:21 a.m.

H: 88°F – 101°F

L: 66°F – 77°F

🌇 6:13 p.m.

August October

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

Temperature climatic data from weather station: PHOENIX SKY HARBOR INTL AP (USW00023183)

Precipitation climatic data from weather station: PHOENIX SKY HARBOR INTL AP (USW00023183)

Agricultural climatic data from weather station: PHOENIX SKY HARBOR INTL AP (USW00023183)