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Weather & Climate · Big Sky Country
Petroleum County · Montana

Winnett

The official National Weather Service forecast for Winnett — 47.0028°N, 108.3521°W, 71.1 miles from I-94.

554
County population
Petroleum
County
I-94
71.1 mi to the Interstate
85 mi
N of Billings

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Winnett Climate Normals

Guide · 1996–2025
Petroleum CountyJFMAMJJASONDYear
Avg high °F34374858677788867660463659
Avg low °F12142332415057554634231433
Precip in0.40.50.61.42.72.71.31.21.21.10.50.514.1

1996–2025 normals for Petroleum County — the climate division Winnett sits in. All-time county record high 111.3°F (2026-07-13); record low -40.6°F (1954-01-20). Source: NOAA / National Weather Service.

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