As of 00:15 EDT

Gaithersburg, MD weather in September

74°

Gaithersburg, Sunday, 9 August, 00:15

Overcast. Feels like 75°. High 88°, low 72°.

Pressure30.00 inHg

Wind5.1 mph W

Humidity90%

Visibility6.2 mi

Dew point71°

See detailed hourly forecast

In September, Gaithersburg, MD averages a high of 77° and a low of 60.7°. About 4.2 inches of precipitation fall over the month (9 wet days). The record high is 98.1° (2023) and the record low 40.1° (1963). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	81.3°	64.6°	28%	95.7° (1973)	54.5° (1967)
2	81.7°	64.2°	38%	95.2° (1980)	53.4° (1967)
3	82°	64.6°	25%	96.1° (2023)	50° (1967)
4	81.5°	65.1°	32%	97.2° (2023)	53.2° (1997)
5	80.8°	64.4°	28%	98.1° (2023)	52° (1997)
6	80.2°	63.7°	35%	96.8° (2023)	52° (2000)
7	80.6°	63.1°	27%	92.1° (2016)	50.4° (1984)
8	80.1°	63°	23%	93.4° (2016)	50.2° (2024)
9	79.3°	62.8°	30%	93.9° (1985)	48.2° (2024)
10	79.2°	62.6°	28%	94.3° (1983)	50.9° (2017)
11	78.8°	61.9°	27%	95.7° (1983)	50° (1967)
12	78.4°	61.7°	22%	93° (2019)	46.6° (1967)
13	78.8°	61.3°	30%	89.4° (2005)	49.5° (1967)
14	78.8°	62.1°	27%	91° (2016)	46.9° (1975)
15	77°	60.8°	30%	91.6° (1970)	47.3° (1975)
16	76.1°	59.4°	27%	93.7° (1991)	47.7° (2011)
17	76.1°	60.3°	38%	94.6° (1991)	46.6° (1986)
18	76.8°	59.9°	35%	90.5° (1978)	43.3° (1990)
19	75.6°	59.2°	23%	89.6° (1983)	46.9° (1984)
20	75.9°	58.8°	20%	87.6° (2005)	44.8° (2020)
21	76.3°	59.7°	28%	88.7° (1998)	43.5° (1962)
22	75.2°	59.4°	42%	91.8° (1970)	44.2° (2020)
23	73.9°	57.9°	32%	92.7° (1970)	44.2° (1983)
24	72.7°	56.8°	27%	92.8° (2010)	40.1° (1963)
25	72.7°	57.2°	37%	91° (1970)	43.7° (1983)
26	73.2°	58.3°	43%	90° (1970)	44.4° (2001)
27	74.1°	58.3°	40%	90.5° (1998)	45.7° (2000)
28	72.5°	57.9°	38%	88.3° (2019)	44.2° (1991)
29	70.3°	56.1°	27%	86.4° (2019)	45.9° (2000)
30	69.8°	54.9°	28%	89.4° (1986)	43.2° (1992)