Iowa · county areal climate 1951–2025

Grundy County, IA

A 35.2" / 47.9°F normal · 2025 ran 108% of normal precipitation.
2026 so far · through Jul 25: This area is at 113% (24.33") of the 1996–2025 to-date normal — the 19th wettest start of 76 years. Temperature +2.5°F vs normal. U.S. year-to-date →

Normal (1996–2025)

35.2in
annual precipitation · 47.9°F

2025 vs Normal

108%
37.9" · 49.2°F (+1.3 vs normal)

Wettest Year

51.0in
1993

Driest Year

19.7in
1988

Biggest Rain Day

3.83in
Jul 10 · 2000

Warmest Year

51.3°F
2012

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

19°
J
22°
F
36°
M
48°
A
60°
M
70°
J
73°
J
70°
A
64°
S
51°
O
37°
N
24°
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 Iowa countiesU.S. overview
DriestSince · 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