As of 11:38 CDT

Letcher, SD weather in September

63°

Letcher, Wednesday, 7 October, 11:38

Mostly clear. Feels like 61°. High 75°, low 48°.

Pressure30.06 inHg

Wind0 mph N

Humidity55%

Visibility6.2 mi

Dew point46°

See detailed hourly forecast

In September, Letcher, SD averages a high of 74.9° and a low of 56°. About 2.4 inches of precipitation fall over the month (7 wet days). The record high is 101.3° (1970) and the record low 29.7° (1965). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	80.8°	62.4°	20%	97.2° (1970)	44.2° (1965)
2	81.9°	62.2°	20%	101.1° (2023)	46.2° (1972)
3	81°	62.2°	22%	98.8° (2023)	40.3° (1974)
4	81.1°	61.5°	17%	100.9° (2023)	45.3° (1962)
5	79.7°	61.7°	22%	97.2° (1978)	42.8° (1962)
6	80.8°	60.3°	18%	101.3° (1970)	43° (2025)
7	78.4°	59.4°	28%	96.6° (1978)	41.4° (2025)
8	77.7°	58.5°	23%	98.1° (2022)	41.7° (1992)
9	77.4°	59°	25%	99° (1979)	41° (2020)
10	78.8°	58.1°	17%	94.1° (1998)	38.5° (2020)
11	77.2°	59.2°	30%	93.6° (2012)	42.6° (1989)
12	76.1°	57.6°	22%	95.7° (1990)	41.5° (1989)
13	74.3°	56.5°	27%	95.4° (1990)	37.9° (1989)
14	73.2°	55.6°	28%	92.7° (1969)	41.4° (1961)
15	73.8°	55.9°	28%	94.8° (2018)	39.2° (1993)
16	74.5°	56.3°	22%	93.2° (2018)	41.5° (1970)
17	74.1°	56.1°	22%	89.2° (2000)	38.7° (1965)
18	74.3°	55.9°	32%	91.8° (1998)	39.7° (1991)
19	73.6°	55.6°	27%	94.5° (1972)	31.5° (1991)
20	72.1°	54.1°	18%	89.8° (1970)	37.9° (2006)
21	70.5°	52.3°	28%	90.5° (2005)	36.5° (1983)
22	68.9°	51.1°	27%	89.4° (2017)	31.6° (1995)
23	69.6°	50.5°	27%	89.2° (2007)	33.8° (1989)
24	70°	51.8°	27%	83.3° (1990)	33.4° (1965)
25	70.7°	51.3°	18%	86.4° (1967)	34.7° (1984)
26	72.7°	51.1°	13%	91.4° (1987)	29.7° (1965)
27	70.3°	50.4°	12%	88.9° (2021)	36.7° (1984)
28	69.6°	50°	23%	92.1° (2021)	31.1° (1984)
29	70.7°	50.9°	22%	87.4° (2025)	30.7° (1984)
30	71.8°	51.6°	15%	88° (1989)	34.3° (1974)