Montana · county areal climate 1951–2025

Petroleum County, MT

A 14.1" / 46.5°F normal · 2025 ran 109% of normal precipitation.
2026 so far · through Jul 25: This area is at 85% (8.0") of the 1996–2025 to-date normal — the 25th driest start of 76 years. Temperature +3.3°F vs normal. U.S. year-to-date →

Normal (1996–2025)

14.1in
annual precipitation · 46.5°F

2025 vs Normal

109%
15.4" · 47.1°F (+0.6 vs normal)

Wettest Year

21.8in
2011

Driest Year

7.6in
1952

Biggest Rain Day

3.0in
Aug 24 · 2014

Warmest Year

48.8°F
2006

Record

1951–2025
75 complete years · NOAA nClimGrid

Monthly Climate

23°
J
25°
F
35°
M
45°
A
54°
M
64°
J
73°
J
71°
A
61°
S
47°
O
34°
N
25°
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

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