South Dakota · county areal climate 1951–2025

McPherson County, SD

A 20.5" / 42.7°F normal · 2025 ran 106% of normal precipitation.
2026 so far · through Jul 25: This area is at 71% (8.77") of the 1996–2025 to-date normal — the 10th driest start of 76 years. Temperature +2.3°F vs normal. U.S. year-to-date →

Normal (1996–2025)

20.5in
annual precipitation · 42.7°F

2025 vs Normal

106%
21.7" · 43.2°F (+0.5 vs normal)

Wettest Year

28.2in
1993

Driest Year

11.2in
1952

Biggest Rain Day

3.16in
Jun 18 · 1964

Warmest Year

46.5°F
1987

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

13°
J
16°
F
28°
M
42°
A
54°
M
65°
J
71°
J
68°
A
60°
S
45°
O
30°
N
18°
D
—— normal temperature (°F) · ▮ normal precipitation (in) · 1996–2025
Areal nClimGrid averages (NOAA/NCEI) over the whole area — an average across the region, not a single station. Separate from the station records.

Nearby

← All South Dakota countiesU.S. overview
WettestSince · browse by state · precipitation & snowfall records · NOAA/RCC-ACIS ThreadEx gauge record · part of Weather Trader · supported by Substack Subscribers
© 2026 Weather Trader · All rights reserved