National Weather Service United States Department of Commerce

A stalled frontal boundary and ample monsoonal moisture will lead to flash flood potential from the Great Basin to the Great Plains tonight and Tuesday

A stalled frontal boundary will set up along the southern and central Rockies for the next couple of days providing focus for showers and thunderstorms. In addition, ample monsoonal moisture will stream in across the southwest bringing enough moisture to introduce a flash flood threat from the Great Basin and Southwest eastward across the central and southern Rockies into the adjacent Plains.
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Current Conditions

San Bernardino County Mountains

Zone Forecast

  • Tonight Partly cloudy. Lows 50 to 60 above 6000 feet to 62 to 68 below 6000 feet. Areas of winds west 15 mph.
  • Tuesday Partly cloudy. Slight chance of showers and thunderstorms in the afternoon. Warmer. Highs 77 to 87 above 6000 feet to 88 to 98 below 6000 feet. Light winds becoming northwest 15 mph in the afternoon. Chance of measurable precipitation 20 percent.
  • Tuesday Night Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows 51 to 61 above 6000 feet to 63 to 69 below 6000 feet. Areas of winds south 15 mph with gusts to 25 mph becoming west overnight. Chance of measurable precipitation 20 percent.
  • Wednesday Partly cloudy. Slight chance of showers and thunderstorms in the afternoon. Highs 78 to 88 above 6000 feet to 89 to 99 below 6000 feet. Light winds. Chance of measurable precipitation 20 percent.
  • Wednesday Night Partly cloudy. Slight chance of showers and thunderstorms in the evening. Lows 56 to 66. Areas of winds west 15 mph. Chance of measurable precipitation 20 percent.
  • Thursday Partly cloudy. Highs 79 to 89 above 6000 feet to 90 to 100 below 6000 feet.
  • Thursday Night Partly cloudy in the evening...becoming mostly clear. Lows 56 to 66.
  • Friday Mostly sunny in the morning...becoming partly cloudy. Highs 81 to 91 above 6000 feet to 92 to 102 below 6000 feet.
  • Friday Night Partly cloudy. Lows 55 to 65.
  • Saturday Partly cloudy. Highs 80 to 90 above 6000 feet to 91 to 101 below 6000 feet.
  • Saturday Night Partly cloudy. Lows 54 to 64.
  • Sunday Partly cloudy. Highs 79 to 89 above 6000 feet to 90 to 100 below 6000 feet.
  • Sunday Night Partly cloudy in the evening...becoming mostly clear. Lows 54 to 64.
  • Monday Mostly sunny in the morning...becoming partly cloudy. Highs 78 to 88 above 6000 feet to 89 to 99 below 6000 feet.