Weather Almanac: Bayamon, PR 00959

🗓️ Historical norms for September 2025

August October

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

September avg. precipitation

🌧️ 8.08"

September days below freezing

📉 ≈0.0 days

Average September lows 72°F – 74°F

USDA Zone

13a

Annual extreme lows 60°F to 65°F

Last Spring Frost (36°F)

🌷 Rare

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First Fall Frost (36°F)

🍂 Rare

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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

🌅 6:10 a.m.

H: 88°F – 93°F

L: 71°F – 76°F

🌇 6:38 p.m.

Tue. September 2

🌅 6:10 a.m.

H: 88°F – 93°F

L: 71°F – 76°F

🌇 6:37 p.m.

Wed. September 3

🌅 6:10 a.m.

H: 88°F – 93°F

L: 71°F – 76°F

🌇 6:36 p.m.

Thu. September 4

🌅 6:10 a.m.

H: 88°F – 93°F

L: 71°F – 75°F

🌇 6:36 p.m.

Fri. September 5

🌅 6:10 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:35 p.m.

Sat. September 6

🌅 6:11 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:34 p.m.

Sun. September 7

🌅 6:11 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:33 p.m.

Mon. September 8

🌅 6:11 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:32 p.m.

Tue. September 9

🌅 6:11 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:31 p.m.

Wed. September 10

🌅 6:11 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:30 p.m.

Thu. September 11

🌅 6:11 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:30 p.m.

Fri. September 12

🌅 6:12 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:29 p.m.

Sat. September 13

🌅 6:12 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:28 p.m.

Sun. September 14 Holy Cross

🌅 6:12 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:27 p.m.

Mon. September 15

🌅 6:12 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:26 p.m.

Tue. September 16

🌅 6:12 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:25 p.m.

Wed. September 17

🌅 6:12 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:24 p.m.

Thu. September 18

🌅 6:12 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:23 p.m.

Fri. September 19

🌅 6:13 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:23 p.m.

Sat. September 20

🌅 6:13 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:22 p.m.

Sun. September 21

🌅 6:13 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:21 p.m.

Mon. September 22 Autumn Equinox

🌅 6:13 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:20 p.m.

Tue. September 23

🌅 6:13 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:19 p.m.

Wed. September 24

🌅 6:13 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:18 p.m.

Thu. September 25

🌅 6:14 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:17 p.m.

Fri. September 26

🌅 6:14 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:17 p.m.

Sat. September 27

🌅 6:14 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:16 p.m.

Sun. September 28

🌅 6:14 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:15 p.m.

Mon. September 29

🌅 6:14 a.m.

H: 88°F – 92°F

L: 71°F – 75°F

🌇 6:14 p.m.

Tue. September 30

🌅 6:15 a.m.

H: 87°F – 92°F

L: 71°F – 75°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: RIO PIEDRAS EXP STN (RQC00668306)

Precipitation climatic data from weather station: LA MUDA CAGUAS (RQC00665123)

Agricultural climatic data from weather station: RIO PIEDRAS EXP STN (RQC00668306)