Mount Hamilton Weather Forecasts. Hamilton averages 32.1 inches of snow per year. San Jose E28 and CalFire E1672 responded to a car that slid off of Mt Umunhum Rd due to the snow. Heavy Rain; Lake Effect Snow Redevelops. Snow, fog, slippery conditions. Hamilton weather data, Sept 1880 to Nov 1885 °F. Wednesday Night: A slight chance of rain and snow. Thursday: Partly sunny, with a high near 44. If you’re the kind of Montanan who embraces the long, snow-filled winters, you’re in luck—the majority of the state sees freezing temperatures and plenty of snowfall for months. Becoming milder with heavy rain (total 25mm) on Tue nightFreeze-thaw conditions (max 3°C on Sun morning, min -3°C on Sun night)Winds increasing (light winds from the W on Sun morning, severe gales from the SSW by Tue afternoon). At first glance it may look like the Sierra, but snow fell on Mount Hamilton in Santa Clara County overnight. MT. Average Weather in Hamilton Montana, United States. The City of Hamilton has declared a snow emergency, effective immediately. Hamilton, MT average temperature is 45.9F, which ranked #77 in Montana. Know what's coming with AccuWeather's extended daily forecasts for Hamilton, MT. Be prepared with the most accurate 10-day forecast for Mount Hamilton, CA with highs, lows, chance of precipitation from The Weather Channel and Weather.com At first glance it may look like the Sierra, but snow fell on Mount Hamilton in Santa Clara County overnight. This … "I was in 82-degree weather. Current conditions at San Jose / Reid / Hillv (KRHV) Lat: 37.33333°NLon: 121.81667°WElev: 135ft. Monthly averages Hamilton Longitude: -114.126, Latitude: 46.2515 Average weather Hamilton, MT - 59840. By nightfall, measurable snow … NWS Missoula, MT Point Forecast: 6 Miles S Hamilton MT 46.15°N 114.13°W (Elev. One-day plots of Mt. Snow on Mt Umunhum! Hamilton weather data (from 1 day to many) Observing statistics: clear nights and average seeing, 1990-1998: 3-meter dome and telescope temperature records, since 1999: Mt. New snow accumulation of less than a half inch possible. Get the forecast for today, tonight & tomorrow's weather for Hamilton, MT. Hamilton, and other Bay Area peaks may also see a dusting, Drew Tuma says. Up to 90 days of daily highs, lows, and precipitation chances. 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One-day plots of Mt. Everything you need to be ready to step out prepared. closed to summit. Mount Hamilton Weather (Days 6-9): A heavy fall of snow, heaviest during Tue afternoon. Summer High: the July high is around 84 degrees Winter Low: the January low is 19 Rain: averages 13 inches of rain a year Snow: averages 32 inches of snow a year. MT. Spokane averages 43.9 inches of snow per year. Timelapse video from Lick Observatory on Mount Hamilton shows the weather going from sunny on Sunday to rainy with lots of snow on Monday. Hamilton weather data (from 1 day to many) Observing statistics: clear nights and average seeing, 1990-1998: 3-meter dome and telescope temperature records, since 1999: Mt. Forecasting the snowfall amount probability, snow accumulation, and a snowfall forecast map. It's falling right now on Mt. Snow level 4700 feet rising to 5500 feet in the afternoon. 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