Forecast in Emigrant Wilderness shows 44% chance of snow on Monday.
Sacramento office, special weather statement:
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SACRAMENTO CA
411 PM PDT THU MAY 23 2013
CAZ013>019-063-064-066>069-241200-
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
BURNEY BASIN / EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY-
CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY-
CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY-
CLEAR LAKE/SOUTHERN LAKE COUNTY-
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
WESTERN PLUMAS COUNTY/LASSEN PARK-
WEST SLOPE NORTHERN SIERRA NEVADA-
411 PM PDT THU MAY 23 2013
...COOL AND SHOWERY WEATHER FOR MEMORIAL DAY INTO NEXT WEEK...
A DISTURBANCE MOVING THROUGH NORTHERN CALIFORNIA ON MEMORIAL DAY WILL
DEEPEN A LOW PRESSURE SYSTEM PRESENTLY OVER THE PACIFIC NORTHWEST.
THIS WILL BRING COOL AND UNSETTLED WEATHER TO THE INTERIOR OF
NORTHERN CALIFORNIA FOR THE MEMORIAL DAY HOLIDAY. A CHANCE OF
SHOWERS ACROSS THE AREA CONTINUES THROUGH THE MIDDLE OF NEXT WEEK
AND POSSIBLY BEYOND AS ADDITIONAL DISTURBANCES MOVE THROUGH.
DAYTIME HIGH TEMPERATURES WILL BE AROUND 10 DEGREES BELOW NORMAL
ON MEMORIAL DAY THEN GRADUALLY WARM THROUGH THE WEEK. HIGHS ARE
EXPECTED TO REMAIN BELOW NORMAL THROUGH THE WEEK.
HIKERS...BACKPACKERS AND OTHER OUTDOOR ENTHUSIASTS ARE ADVISED TO
BE PREPARED FOR THE MUCH COOLER AND MORE UNSETTLED WEATHER FOR
EARLY NEXT WEEK. CONDITIONS MAY BE QUITE WET AT TIMES...
ESPECIALLY IN THE NORTHERN SIERRA NEVADA. SNOW LEVELS WILL REMAIN
HIGH BUT SOME ACCUMULATION IS LIKELY ACROSS THE HIGHER PEAKS.