Petroleum County weather, town by town
1 place in Petroleum County, Montana, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1913 to 2026. Station extremes, not official state records.
Petroleum County Weather Facts
Petroleum County has 1 place on myweatherrock (1 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 111°F at Flatwillow 4 Ene on July 12, 2026. The coldest night is -48°F at Flatwillow 4 Ene on December 18, 1924. The wettest day brought 3.35 inches of rain at Winnett 6Nne on August 23, 2014. The biggest single-day snow measured 12.99 inches at Winnett 6Nne on February 28, 2007. Those are station measurements from NOAA's daily records, 1913 to 2026, not official state records. By area the largest place is Winnett, about 1 square miles.
About Petroleum County weather
The map on the Now tab shows every Petroleum County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 1 Petroleum County towns with station normals, the warmest month is July, when the day usually reaches 88°F, and the coldest is January, when the night usually falls to 13°F. May is the wettest, with rain on about 9 days.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Petroleum County weather records
Measured at the NOAA stations serving these towns, daily records 1913 to 2026. Station extremes, not official state records.
Common questions about Petroleum County weather
- What is the hottest temperature recorded at a Petroleum County station?
- 111°F at Flatwillow 4 Ene on July 12, 2026, in the NOAA daily station records myweatherrock holds (1913 to 2026).
- What is the coldest temperature recorded at a Petroleum County station?
- -48°F at Flatwillow 4 Ene on December 18, 1924.
- What is the most rain a Petroleum County station has measured in one day?
- 3.35 inches at Winnett 6Nne on August 23, 2014.
- What is the biggest one-day snowfall at a Petroleum County station?
- 12.99 inches at Winnett 6Nne on February 28, 2007.
- How many Petroleum County towns have a weather page here?
- 1: 1 towns. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Petroleum County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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