Weather Almanac: Clarks Summit, PA 18411

🗓️ Historical norms for September 2025

August October

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

September avg. precipitation

🌧️ 4.07"

September days below freezing

📉 ≈0.1 days

Average September lows 50°F – 54°F

USDA Zone

Annual extreme lows -10°F to -5°F

Last Spring Frost (36°F)

🌷 May 17

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First Fall Frost (36°F)

🍂 Sep 28

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Book Recommendations (ads!)

📚 Pennsylvania Month-by-Month Gardening: What to Do Each Month to Have A Beautiful Garden All Year

📚 Mid-Atlantic Gardener's Handbook, 2nd Edition: All You Need to Know to Plan, Plant & Maintain a Mid-Atlantic Garden

📚 The Timber Press Guide to Vegetable Gardening in the Northeast

F: Forecast

H: Normal High Temp

L: Normal Low Temp

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Mon. September 1 Labor Day

🌅 6:29 a.m.

H: 71°F – 84°F

L: 50°F – 64°F

🌇 7:35 p.m.

Tue. September 2

🌅 6:30 a.m.

H: 70°F – 84°F

L: 50°F – 64°F

🌇 7:33 p.m.

Wed. September 3

🌅 6:31 a.m.

H: 70°F – 84°F

L: 50°F – 63°F

🌇 7:32 p.m.

Thu. September 4

🌅 6:32 a.m.

H: 70°F – 83°F

L: 49°F – 63°F

🌇 7:30 p.m.

Fri. September 5

🌅 6:33 a.m.

H: 69°F – 83°F

L: 49°F – 63°F

🌇 7:28 p.m.

Sat. September 6

🌅 6:34 a.m.

H: 69°F – 83°F

L: 49°F – 63°F

🌇 7:27 p.m.

Sun. September 7

🌅 6:35 a.m.

H: 69°F – 82°F

L: 48°F – 62°F

🌇 7:25 p.m.

Mon. September 8

🌅 6:36 a.m.

H: 68°F – 82°F

L: 48°F – 62°F

🌇 7:23 p.m.

Tue. September 9

🌅 6:37 a.m.

H: 68°F – 82°F

L: 48°F – 62°F

🌇 7:21 p.m.

Wed. September 10

🌅 6:38 a.m.

H: 68°F – 82°F

L: 47°F – 62°F

🌇 7:20 p.m.

Thu. September 11

🌅 6:39 a.m.

H: 67°F – 81°F

L: 47°F – 61°F

🌇 7:18 p.m.

Fri. September 12

🌅 6:40 a.m.

H: 67°F – 81°F

L: 46°F – 61°F

🌇 7:16 p.m.

Sat. September 13

🌅 6:41 a.m.

H: 66°F – 81°F

L: 46°F – 61°F

🌇 7:15 p.m.

Sun. September 14 Holy Cross

🌅 6:42 a.m.

H: 66°F – 80°F

L: 46°F – 60°F

🌇 7:13 p.m.

Mon. September 15

🌅 6:43 a.m.

H: 65°F – 80°F

L: 45°F – 60°F

🌇 7:11 p.m.

Tue. September 16

🌅 6:44 a.m.

H: 65°F – 80°F

L: 45°F – 60°F

🌇 7:09 p.m.

Wed. September 17

🌅 6:45 a.m.

H: 65°F – 79°F

L: 44°F – 59°F

🌇 7:08 p.m.

Thu. September 18

🌅 6:46 a.m.

H: 64°F – 79°F

L: 44°F – 59°F

🌇 7:06 p.m.

Fri. September 19

🌅 6:47 a.m.

H: 64°F – 79°F

L: 43°F – 59°F

🌇 7:04 p.m.

Sat. September 20

🌅 6:48 a.m.

H: 63°F – 78°F

L: 43°F – 58°F

🌇 7:03 p.m.

Sun. September 21

🌅 6:49 a.m.

H: 63°F – 78°F

L: 42°F – 58°F

🌇 7:01 p.m.

Mon. September 22 Autumn Equinox

🌅 6:50 a.m.

H: 62°F – 78°F

L: 42°F – 57°F

🌇 6:59 p.m.

Tue. September 23

🌅 6:51 a.m.

H: 62°F – 77°F

L: 42°F – 57°F

🌇 6:57 p.m.

Wed. September 24

🌅 6:52 a.m.

H: 61°F – 77°F

L: 41°F – 57°F

🌇 6:56 p.m.

Thu. September 25

🌅 6:53 a.m.

H: 61°F – 77°F

L: 41°F – 56°F

🌇 6:54 p.m.

Fri. September 26

🌅 6:54 a.m.

H: 61°F – 76°F

L: 40°F – 56°F

🌇 6:52 p.m.

Sat. September 27

🌅 6:55 a.m.

H: 60°F – 76°F

L: 40°F – 56°F

🌇 6:51 p.m.

Sun. September 28

🌅 6:56 a.m.

H: 60°F – 75°F

L: 39°F – 55°F

🌇 6:49 p.m.

Mon. September 29

🌅 6:58 a.m.

H: 59°F – 75°F

L: 39°F – 55°F

🌇 6:47 p.m.

Tue. September 30

🌅 6:59 a.m.

H: 59°F – 75°F

L: 39°F – 55°F

🌇 6:45 p.m.

August October

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

Temperature climatic data from weather station: WILKES-BARRE INTL AP (USW00014777)

Precipitation climatic data from weather station: WILKES-BARRE INTL AP (USW00014777)

Agricultural climatic data from weather station: WILKES-BARRE INTL AP (USW00014777)