🌷 Your Ultimate Garden Calendar!

Weather Almanac: Castro Valley, CA 94546

🗓️ Historical norms for June 2026

May July
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
June avg. precipitation
🌧️ 0.20"
June days below freezing
📉 ≈0.0 days
Average June lows 54°F – 57°F
USDA Zone
9b
Annual extreme lows 25°F to 30°F
Last Spring Frost (36°F)
🌷 Feb 4
View full details
First Fall Frost (36°F)
🍂 Dec 9
View full details

Book Recommendations (ads!)

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

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

📚 California Gardener's Handbook: Your Complete Guide: Select - Plan - Plant - Maintain - Problem-solve

F: Forecast
H: Normal High Temp
L: Normal Low Temp
Mon. June 1  

🌅 5:48 a.m.

H: 63°F – 78°F

L: 51°F – 57°F

🌇 8:24 p.m.

Tue. June 2  

🌅 5:47 a.m.

H: 63°F – 78°F

L: 51°F – 57°F

🌇 8:25 p.m.

Wed. June 3  

🌅 5:47 a.m.

H: 63°F – 78°F

L: 51°F – 57°F

🌇 8:25 p.m.

Thu. June 4  

🌅 5:47 a.m.

H: 63°F – 78°F

L: 51°F – 57°F

🌇 8:26 p.m.

Fri. June 5  

🌅 5:46 a.m.

H: 63°F – 78°F

L: 51°F – 57°F

🌇 8:27 p.m.

Sat. June 6  

🌅 5:46 a.m.

H: 63°F – 78°F

L: 51°F – 57°F

🌇 8:27 p.m.

Sun. June 7  

🌅 5:46 a.m.

H: 63°F – 79°F

L: 51°F – 57°F

🌇 8:28 p.m.

Mon. June 8  

🌅 5:46 a.m.

H: 64°F – 79°F

L: 52°F – 57°F

🌇 8:28 p.m.

Tue. June 9  

🌅 5:46 a.m.

H: 64°F – 79°F

L: 52°F – 57°F

🌇 8:29 p.m.

Wed. June 10  

🌅 5:46 a.m.

H: 64°F – 79°F

L: 52°F – 58°F

🌇 8:29 p.m.

Thu. June 11  

🌅 5:46 a.m.

H: 64°F – 79°F

L: 52°F – 58°F

🌇 8:30 p.m.

Fri. June 12  

🌅 5:46 a.m.

H: 64°F – 79°F

L: 52°F – 58°F

🌇 8:30 p.m.

Sat. June 13  

🌅 5:46 a.m.

H: 64°F – 80°F

L: 52°F – 58°F

🌇 8:31 p.m.

Sun. June 14  

🌅 5:46 a.m.

H: 64°F – 80°F

L: 52°F – 58°F

🌇 8:31 p.m.

Mon. June 15  

🌅 5:46 a.m.

H: 64°F – 80°F

L: 52°F – 58°F

🌇 8:31 p.m.

Tue. June 16  

🌅 5:46 a.m.

H: 64°F – 80°F

L: 52°F – 58°F

🌇 8:32 p.m.

Wed. June 17  

🌅 5:46 a.m.

H: 64°F – 80°F

L: 53°F – 58°F

🌇 8:32 p.m.

Thu. June 18  

🌅 5:46 a.m.

H: 64°F – 81°F

L: 53°F – 58°F

🌇 8:32 p.m.

Fri. June 19 Juneteenth  

🌅 5:46 a.m.

H: 64°F – 81°F

L: 53°F – 58°F

🌇 8:33 p.m.

Sat. June 20  

🌅 5:46 a.m.

H: 65°F – 81°F

L: 53°F – 58°F

🌇 8:33 p.m.

Sun. June 21 Summer Solstice  

🌅 5:46 a.m.

H: 65°F – 81°F

L: 53°F – 59°F

🌇 8:33 p.m.

Mon. June 22  

🌅 5:47 a.m.

H: 65°F – 81°F

L: 53°F – 59°F

🌇 8:33 p.m.

Tue. June 23  

🌅 5:47 a.m.

H: 65°F – 81°F

L: 53°F – 59°F

🌇 8:33 p.m.

Wed. June 24  

🌅 5:47 a.m.

H: 65°F – 81°F

L: 53°F – 59°F

🌇 8:34 p.m.

Thu. June 25  

🌅 5:48 a.m.

H: 65°F – 81°F

L: 54°F – 59°F

🌇 8:34 p.m.

Fri. June 26  

🌅 5:48 a.m.

H: 65°F – 81°F

L: 54°F – 59°F

🌇 8:34 p.m.

Sat. June 27  

🌅 5:48 a.m.

H: 65°F – 81°F

L: 54°F – 59°F

🌇 8:34 p.m.

Sun. June 28  

🌅 5:49 a.m.

H: 65°F – 81°F

L: 54°F – 59°F

🌇 8:34 p.m.

Mon. June 29 🌕

🌅 5:49 a.m.

H: 65°F – 81°F

L: 54°F – 59°F

🌇 8:34 p.m.

Tue. June 30  

🌅 5:49 a.m.

H: 65°F – 81°F

L: 54°F – 59°F

🌇 8:34 p.m.

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

Temperature climatic data from weather station: HAYWARD AIR TERMINAL (USW00093228)

Precipitation climatic data from weather station: HAYWARD AIR TERMINAL (USW00093228)

Agricultural climatic data from weather station: HAYWARD AIR TERMINAL (USW00093228)