Indiana · county areal climate 1951–2025

Sullivan County, IN

A 45.4" / 54.8°F normal · 2025 ran 98% of normal precipitation.
2026 so far · through Jul 25: This area is at 95% (27.0") of the 1996–2025 to-date normal — the 51st driest start of 76 years. Temperature +1.6°F vs normal. U.S. year-to-date →

Normal (1996–2025)

45.4in
annual precipitation · 54.8°F

2025 vs Normal

98%
44.4" · 55.5°F (+0.7 vs normal)

Wettest Year

58.1in
2008

Driest Year

27.6in
1953

Biggest Rain Day

3.97in
Jun 7 · 2008

Warmest Year

57.5°F
2024

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

30°
J
34°
F
44°
M
55°
A
65°
M
73°
J
76°
J
75°
A
68°
S
57°
O
44°
N
35°
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 Indiana 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