SOUTH LAKE TAHOE, Calif. – A weak low-pressure system may bring chances of isolated light showers into the region through Monday. Above-normal temperatures are expected to persist through late week, with a cooling trend and precipitation chances arriving by next weekend, according to the National Weather Service (NWS) in Reno.
An upper ridge will rebound after the trough exits early Tuesday morning, returning us to our warming trend of around 10 degrees above average through the end of the week. Then, for the Friday in to the weekend time frame, a colder trough will drop into the Pacific Northwest, bringing a stark cooling pattern with shower chances and increased winds. Temperatures will return to more seasonal averages, with recent guidance suggesting shower chances of around 10-20% for the weekend.
South Lake Tahoe forecast from NWS Reno:
Monday
A 20 percent chance of showers after 2pm. Mostly sunny, with a high near 78. Calm wind becoming northwest around 5 mph.
Monday Night
A 20 percent chance of showers before 8pm. Mostly clear, with a low around 49. Calm wind.
Tuesday
Sunny, with a high near 80. Calm wind.
Tuesday Night
Clear, with a low around 49. Calm wind.
Wednesday
Sunny, with a high near 82. Calm wind.
Wednesday Night
Clear, with a low around 51.
Thursday
Sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
Partly cloudy, with a low around 37.
Sunday
Mostly sunny, with a high near 63.