As of 17:25 EDT

Glen St. Mary, FL weather in September

82°

Glen St. Mary, Sunday, 9 August, 17:25

Overcast. Feels like 91°. High 91°, low 73°.

Pressure30.06 inHg

Wind5 mph E

Humidity88%

Visibility6.2 mi

Dew point73°

See detailed hourly forecast

In September, Glen St. Mary, FL averages a high of 85.6° and a low of 70.8°. About 4.5 inches of precipitation fall over the month (15 wet days). The record high is 99° (2019) and the record low 50.5° (1967). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	87.3°	72.9°	65%	93.4° (1984)	65.8° (1999)
2	86.9°	72.7°	70%	93.7° (1999)	65.5° (1972)
3	86.9°	72.1°	55%	96.3° (1999)	66.4° (1972)
4	87.1°	72.1°	60%	95.7° (1999)	66.6° (2025)
5	86.5°	72°	55%	97.5° (1999)	65.8° (2023)
6	86.4°	72°	68%	94.8° (2019)	63.5° (1994)
7	86°	71.8°	58%	97.2° (2019)	66° (1997)
8	85.8°	71.4°	67%	99° (2019)	63.3° (1972)
9	86.2°	71.8°	55%	98.8° (2019)	66.4° (1997)
10	86.2°	71.6°	50%	94.3° (1990)	66.2° (2017)
11	86.7°	71.6°	50%	95.7° (2011)	65.5° (2025)
12	86°	71.4°	50%	95.7° (2010)	64.4° (2003)
13	85.8°	71.4°	42%	93.6° (2011)	64.2° (2017)
14	86.4°	70.9°	40%	94.3° (1972)	60.1° (1964)
15	86.4°	71.2°	48%	96.4° (1972)	62.4° (1976)
16	86.5°	71.6°	55%	96.3° (2019)	61.2° (1967)
17	86.2°	71.2°	52%	98.6° (2019)	60.3° (1967)
18	85.5°	70.9°	50%	94.5° (2005)	63.3° (1981)
19	85.3°	70.3°	53%	93.7° (1972)	56.5° (1981)
20	85.3°	70.2°	38%	93.6° (1990)	54.1° (1981)
21	85.5°	70.5°	43%	95.5° (1990)	60.3° (2006)
22	85.3°	70.3°	35%	95.4° (1990)	62.1° (1983)
23	84.9°	69.4°	38%	92.3° (2006)	58.1° (1982)
24	84.4°	69.3°	37%	94.8° (2019)	58.8° (2021)
25	84.6°	69.4°	45%	95° (2019)	59.4° (2008)
26	84.4°	69.8°	50%	96.1° (2019)	59.5° (1975)
27	84°	69.6°	40%	93.6° (2019)	59° (1991)
28	84.2°	68.9°	47%	93.2° (2018)	58.1° (1962)
29	83.1°	68.5°	43%	91.9° (1972)	53.6° (1962)
30	82.6°	68°	42%	93.4° (2019)	50.5° (1967)