As of 13:10 MDT

Potomac, MT weather in May

66°

Potomac, Wednesday, 7 October, 13:10

Partly cloudy. Feels like 64°. High 72°, low 39°.

Pressure30.15 inHg

Wind3.1 mph S

Humidity40%

Visibility6.2 mi

Dew point40°

See detailed hourly forecast

In May, Potomac, MT averages a high of 62.5° and a low of 40.1°. About 2.5 inches of precipitation fall over the month (13 wet days). The record high is 90° (2025) and the record low 21.7° (1997). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	57.4°	34.3°	25%	81.1° (2023)	23.9° (2024)
2	58.6°	35.8°	28%	82.6° (2023)	26.1° (1976)
3	59.2°	36.9°	38%	79.7° (2023)	27.7° (2017)
4	58.8°	36.1°	35%	81° (2023)	25° (1982)
5	60.1°	37°	40%	81.9° (1966)	24.6° (1967)
6	59.5°	37.8°	47%	80.2° (1992)	26.1° (1961)
7	58.3°	38.1°	43%	82.2° (1987)	29.1° (1997)
8	59°	37.4°	40%	82.6° (1987)	21.7° (1997)
9	59.2°	37.4°	42%	79.2° (1994)	23.4° (2002)
10	59.2°	37.6°	43%	79.9° (2025)	25.2° (2022)
11	59.5°	37.2°	40%	82.4° (1960)	23.4° (1983)
12	61.2°	37.9°	37%	82.4° (1993)	23.7° (1970)
13	62.4°	39.4°	32%	80.6° (1993)	27.7° (1970)
14	62.8°	39.7°	38%	77.9° (2012)	29.1° (2017)
15	64.2°	40.1°	37%	83.5° (2006)	27.9° (1974)
16	63.9°	40.6°	48%	84.9° (2006)	29.5° (1974)
17	63.3°	41.2°	42%	84.6° (2006)	31.1° (1974)
18	63.1°	41.7°	38%	85.8° (2006)	29.1° (2024)
19	63.1°	40.8°	38%	84° (2023)	30.4° (2025)
20	63.3°	41°	47%	85.8° (2023)	29.3° (1975)
21	63.1°	40.8°	40%	86.2° (2023)	29.3° (2021)
22	63.9°	41.4°	48%	81.5° (1988)	28.9° (2021)
23	64°	41.4°	47%	81.1° (1979)	29.5° (1966)
24	64.6°	42.6°	42%	83.1° (2001)	29.1° (1960)
25	65.8°	42.6°	48%	80.4° (2001)	28° (1975)
26	66°	44.1°	40%	85.5° (1986)	30.2° (1964)
27	66.4°	43.9°	40%	86.2° (1986)	31.3° (1980)
28	66.4°	43.9°	48%	86.7° (1986)	33.3° (2011)
29	66.4°	43.9°	50%	87.6° (1986)	31.6° (1982)
30	66°	44.2°	42%	88° (2020)	32.9° (1982)
31	67.6°	44.8°	47%	90° (2025)	32.2° (2024)