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This week's forecast shows temperatures running 4°F above the historical average for October-November. Normal highs for this period are around 53°F with lows around 32°F.
1846 - Eighty-seven pioneers were trapped by early snows in the Sierra Nevada Mountains that piled five feet deep, with 30 to 40 foot drifts. Just 47 persons survived the "Donner Pass Tragedy".
More on this and other weather history
 
Day: Mostly sunny, with a high near 48. West northwest wind 6 to 15 mph, with gusts as high as 23 mph.
 
Night: Mostly cloudy, with a low around 35. West northwest wind 6 to 10 mph.
 
Day: A slight chance of rain showers after 1pm. Mostly cloudy, with a high near 45. Northwest wind 6 to 9 mph. Chance of precipitation is 20%.
 
Night: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 29. West wind 1 to 5 mph. Chance of precipitation is 20%.
 
Day: Sunny, with a high near 55.
 
Night: Mostly clear, with a low around 38.
 
Day: Sunny, with a high near 61.
 
Night: Mostly clear, with a low around 35.
 
Day: Mostly sunny, with a high near 63.
 
Night: Partly cloudy, with a low around 40.
 
Day: Sunny, with a high near 64.
 
Night: Mostly clear, with a low around 35.
 
Day: Mostly sunny, with a high near 60.
 
   
Thu's High Temperature
98 at 2 Miles West Of Pala, CA and 6 Miles West-southwest Of Glamis, CA
Thu's Low Temperature
10 at 4 Miles Northwest Of Grand Lake, CO and 2 Miles Southwest Of Canyon Village, WY

Ontario is a community within the corporate limits of the city of Ames, in Story County, Iowa, United States.
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Current conditions: We use the nearest available station to your location - including professional MESONET/MADIS and local weather stations - often miles closer than regional airports.
Forecasts: National Weather Service point forecasts predict for your specific area, not broad regional zones, making them far more relevant to your location.