Weather Almanac: Hillsboro, OR 97123

🗓️ Historical norms for August 2025

July September

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

August avg. precipitation

🌧️ 0.70"

August days below freezing

📉 ≈0.0 days

Average August lows 54°F – 57°F

USDA Zone

Annual extreme lows 15°F to 20°F

Last Spring Frost (36°F)

🌷 Apr 27

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First Fall Frost (36°F)

🍂 Oct 18

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Book Recommendations (ads!)

📚 Pacific Northwest Month-by-Month Gardening: What to Do Each Month to Have a Beautiful Garden All Year

📚 Gardening in the Pacific Northwest: The Complete Homeowner's Guide

📚 Growing Vegetables West of the Cascades, 35th Anniversary Edition: The Complete Guide to Organic Gardening

F: Forecast

H: Normal High Temp

L: Normal Low Temp

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Fri. August 1

🌅 5:56 a.m.

F: 87°F / 57°F

H: 75°F – 93°F

L: 53°F – 61°F

🌇 8:39 p.m.

Sat. August 2

🌅 5:57 a.m.

F: 85°F / 56°F

H: 75°F – 93°F

L: 53°F – 61°F

🌇 8:37 p.m.

Sun. August 3

🌅 5:58 a.m.

F: 80°F / 53°F

H: 75°F – 93°F

L: 53°F – 61°F

🌇 8:36 p.m.

Mon. August 4

🌅 6:00 a.m.

F: 79°F / 53°F

H: 75°F – 93°F

L: 52°F – 61°F

🌇 8:35 p.m.

Tue. August 5

🌅 6:01 a.m.

F: 81°F / 58°F

H: 75°F – 93°F

L: 52°F – 61°F

🌇 8:33 p.m.

Wed. August 6

🌅 6:02 a.m.

F: 82°F / 60°F

H: 75°F – 93°F

L: 52°F – 61°F

🌇 8:32 p.m.

Thu. August 7

🌅 6:03 a.m.

H: 75°F – 93°F

L: 52°F – 61°F

🌇 8:30 p.m.

Fri. August 8

🌅 6:04 a.m.

H: 75°F – 93°F

L: 52°F – 61°F

🌇 8:29 p.m.

Sat. August 9

🌅 6:06 a.m.

H: 75°F – 92°F

L: 52°F – 61°F

🌇 8:27 p.m.

Sun. August 10

🌅 6:07 a.m.

H: 75°F – 92°F

L: 52°F – 60°F

🌇 8:26 p.m.

Mon. August 11

🌅 6:08 a.m.

H: 75°F – 92°F

L: 52°F – 60°F

🌇 8:24 p.m.

Tue. August 12

🌅 6:09 a.m.

H: 75°F – 92°F

L: 52°F – 60°F

🌇 8:23 p.m.

Wed. August 13

🌅 6:10 a.m.

H: 75°F – 92°F

L: 51°F – 60°F

🌇 8:21 p.m.

Thu. August 14

🌅 6:12 a.m.

H: 75°F – 92°F

L: 51°F – 60°F

🌇 8:20 p.m.

Fri. August 15

🌅 6:13 a.m.

H: 75°F – 92°F

L: 51°F – 60°F

🌇 8:18 p.m.

Sat. August 16

🌅 6:14 a.m.

H: 75°F – 91°F

L: 51°F – 60°F

🌇 8:16 p.m.

Sun. August 17

🌅 6:15 a.m.

H: 74°F – 91°F

L: 51°F – 60°F

🌇 8:15 p.m.

Mon. August 18

🌅 6:16 a.m.

H: 74°F – 91°F

L: 51°F – 59°F

🌇 8:13 p.m.

Tue. August 19

🌅 6:18 a.m.

H: 74°F – 91°F

L: 51°F – 59°F

🌇 8:11 p.m.

Wed. August 20

🌅 6:19 a.m.

H: 74°F – 91°F

L: 50°F – 59°F

🌇 8:10 p.m.

Thu. August 21

🌅 6:20 a.m.

H: 74°F – 91°F

L: 50°F – 59°F

🌇 8:08 p.m.

Fri. August 22

🌅 6:21 a.m.

H: 74°F – 90°F

L: 50°F – 59°F

🌇 8:06 p.m.

Sat. August 23

🌅 6:23 a.m.

H: 74°F – 90°F

L: 50°F – 59°F

🌇 8:04 p.m.

Sun. August 24

🌅 6:24 a.m.

H: 74°F – 90°F

L: 50°F – 59°F

🌇 8:03 p.m.

Mon. August 25

🌅 6:25 a.m.

H: 73°F – 90°F

L: 50°F – 58°F

🌇 8:01 p.m.

Tue. August 26

🌅 6:26 a.m.

H: 73°F – 90°F

L: 49°F – 58°F

🌇 7:59 p.m.

Wed. August 27

🌅 6:27 a.m.

H: 73°F – 90°F

L: 49°F – 58°F

🌇 7:57 p.m.

Thu. August 28

🌅 6:29 a.m.

H: 73°F – 90°F

L: 49°F – 58°F

🌇 7:56 p.m.

Fri. August 29

🌅 6:30 a.m.

H: 73°F – 90°F

L: 49°F – 58°F

🌇 7:54 p.m.

Sat. August 30

🌅 6:31 a.m.

H: 73°F – 89°F

L: 49°F – 58°F

🌇 7:52 p.m.

Sun. August 31

🌅 6:32 a.m.

H: 73°F – 89°F

L: 49°F – 58°F

🌇 7:50 p.m.

July September

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

Temperature climatic data from weather station: HILLSBORO (USC00353908)

Precipitation climatic data from weather station: HILLSBORO (USC00353908)

Agricultural climatic data from weather station: HILLSBORO (USC00353908)