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Butte-Silver Bow, Montana 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for 9 Miles SW Butte MT
National Weather Service Forecast for:
9 Miles SW Butte MT
Issued by: National Weather Service Missoula, MT |
| Updated: 12:22 am MDT May 16, 2026 |
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Overnight
Mostly Cloudy
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Saturday
Slight Chance
Rain/Snow
then Chance
Rain/Snow
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Saturday
Night
Rain/Snow
Likely then
Chance Snow
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Sunday
Chance Snow
then Snow
Showers
Likely
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Sunday
Night
Chance Snow
then Mostly
Cloudy
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Monday
Partly Sunny
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Monday
Night
Partly Cloudy
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Tuesday
Mostly Sunny
then Slight
Chance
Rain/Snow
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Tuesday
Night
Mostly Cloudy
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| Lo 35 °F |
Hi 47 °F |
Lo 27 °F |
Hi 41 °F |
Lo 27 °F |
Hi 47 °F |
Lo 28 °F |
Hi 55 °F |
Lo 33 °F |
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Winter Weather Advisory
Overnight
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Mostly cloudy, with a low around 35. Calm wind. |
Saturday
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A chance of rain and snow before 3pm, then a chance of rain showers between 3pm and 4pm, then a chance of rain and snow showers after 4pm. Some thunder is also possible. Snow level 5800 feet rising to 6700 feet in the afternoon. Mostly cloudy, with a high near 47. Light north northwest wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 23 mph. Chance of precipitation is 50%. Little or no snow accumulation expected. |
Saturday Night
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Rain and snow likely, becoming all snow after 7pm. Mostly cloudy, with a low around 27. North northwest wind 12 to 17 mph becoming northwest 5 to 10 mph after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible. |
Sunday
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Snow showers likely, mainly before 5pm. Some thunder is also possible. Partly sunny, with a high near 41. West northwest wind 6 to 11 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible. |
Sunday Night
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A 40 percent chance of snow before midnight. Mostly cloudy, with a low around 27. North northwest wind 11 to 21 mph, with gusts as high as 31 mph. New snow accumulation of less than a half inch possible. |
Monday
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Partly sunny, with a high near 47. |
Monday Night
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Partly cloudy, with a low around 28. |
Tuesday
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A slight chance of rain and snow showers between noon and 3pm, then a slight chance of rain showers after 3pm. Some thunder is also possible. Snow level rising to 6900 feet in the afternoon. Mostly sunny, with a high near 55. |
Tuesday Night
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Mostly cloudy, with a low around 33. |
Wednesday
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A slight chance of rain after noon. Snow level 6500 feet rising to 8100 feet in the afternoon. Mostly sunny, with a high near 57. |
Wednesday Night
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Partly cloudy, with a low around 35. |
Thursday
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Mostly sunny, with a high near 65. |
Thursday Night
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Partly cloudy, with a low around 39. |
Friday
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A chance of showers and thunderstorms. Mostly sunny, with a high near 66. |
Forecast from NOAA-NWS
for 9 Miles SW Butte MT.
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Weather Forecast Discussion
881
FXUS65 KMSO 152035
AFDMSO
Area Forecast Discussion
National Weather Service Missoula MT
235 PM MDT Fri May 15 2026
.DISCUSSION...
KEY MESSAGES:
- Unsettled, cool, and showery conditions persist into the
weekend.
- Mountain snow this weekend will create difficult conditions for
backcountry recreation, especially along the Continental
Divide.
- Widespread frost and freezing temperatures are highly likely
Sunday through Tuesday mornings.
Showery conditions have developed this afternoon under modest
instability and moisture ahead of an approaching trough. Showers
will mainly favor the higher terrain across northwest Montana. Snow
levels will continue to hover around 5,000-6,000 feet, so light
snow accumulations will remain confined to the higher terrain.
A more organized low pressure system will begin to drop into
western Montana and north central Idaho this weekend, bringing
increased chances for precipitation area wide. The system has
anomalously cold air associated with it, and will drop snow
levels as low as 4000 feet by Sunday morning. Accumulating snow is
anticipated for the higher elevations, bringing difficult
conditions for backcountry recreation due to slushy snow
accumulations on unpaved roadways. Cold, wet and breezy conditions
will increase the hypothermia risk for any recreationalists. The
precipitation looks to intensify along the Continental Divide on
Sunday as northeasterly flow enhances lift along the Continental
Divide. Accumulating slushy snow even into the higher elevation
valleys in southwest Montana (Butte) is possible. Winter weather
advisories have been issued for the higher terrain and may need to
be expanded westwards on future shifts.
Unseasonably cold temperatures will be in place Sunday through
early next week, bringing the threat for a frost/freeze across
many valleys of western Montana and north central Idaho. Those
with sensitive vegetation or early season plantings may want to
take protective measures, especially on Monday morning when frost
has the potential to be most widespread due to decreased cloud
cover.
A general warming trend is anticipated next week, though generally
returning to normal for this time of year. A period of brief
drying is possible but may not be long lasting.
&&
.AVIATION... West winds of about 10 to 20 knots will be widespread
this afternoon ahead of a trough of low pressure approaching from
the west. Scattered showers at KMSO and KGPI may bring brief,
localized reductions in visibility into this evening. More
widespread showers will arrive overnight tonight or early Saturday
morning, favoring KGPI, KMSO, and KHRF. Expect widespread lowered
ceilings down to about 2500 feet by Saturday morning, as well as
continued precipitation through about midday transitioning to
scattered showers and thunderstorms in the afternoon. Precipitation
will obscure terrain throughout the Northern Rockies airspace.
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Winter Weather Advisory from midnight Saturday night to midnight
MDT Sunday night for Bitterroot/Sapphire Mountains...
Butte/Blackfoot Region...Potomac/Seeley Lake Region...West
Glacier Region.
ID...None.
&&
$$
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