Arnold, CA…Detailed forecast for the West Slope Northern Sierra Nevada from the National Weather Service in Sacramento. Tonight, Mostly cloudy in the evening then clearing. Lows 42 to 57 higher elevations…55 to 67 lower elevations. Prevailing northwest winds up to 10 mph shifting to the east after midnight. Gusts up to 30 mph. Tuesday, Sunny, warmer. Highs 68 to 83 higher elevations… 83 to 93 lower elevations. Prevailing east winds 5 to 15 mph shifting to the south in the afternoon. Gusts up to 30 mph.

Tuesday Night
Clear. Lows 46 to 61 higher elevations…57 to 71 lower elevations. Prevailing north winds up to 10 mph shifting to the northeast after midnight.

Wednesday
Sunny. Highs 70 to 85 higher elevations…85 to 95 lower elevations. Prevailing east winds 5 to 15 mph shifting to the southwest in the afternoon.

Wednesday Night
Partly cloudy. Lows 47 to 62 higher elevations…58 to 70 lower elevations. Prevailing west winds up to 10 mph shifting to the east after midnight.

Thursday
Partly cloudy with a slight chance of showers and thunderstorms. Highs 70 to 85.

Thursday Night
Mostly clear. Lows 50 to 65.

Friday Through Monday
Clear. Highs 73 to 88. Lows 51 to 66.

Detailed forecast for
Motherlode
Tonight
Partly cloudy in the evening then clearing. Lows 59 to 67. Prevailing northwest winds up to 10 mph shifting to the northeast after midnight.
Tuesday
Sunny, warmer. Highs 90 to 100. Prevailing east winds 5 to 15 mph shifting to the southwest in the afternoon.
Tuesday Night
Clear. Lows 62 to 72. Prevailing northwest winds up to 10 mph shifting to the northeast after midnight.
Wednesday
Sunny. Highs 90 to 102. Prevailing east winds up to 10 mph shifting to the southwest in the afternoon.
Wednesday Night
Partly cloudy. Lows 63 to 71. Prevailing southwest winds up to 10 mph in the evening becoming light.
Thursday
Mostly sunny. Highs 86 to 98.
Thursday Night
Mostly clear. Lows 62 to 70.
Friday Through Monday
Clear. Highs 87 to 99. Lows 61 to 70.

Heat Advisory

URGENT – WEATHER MESSAGE
National Weather Service Sacramento CA
1033 AM PDT Mon Jun 20 2022

CAZ015>019-063-066-067-211400-
/O.NEW.KSTO.HT.Y.0003.220621T1700Z-220623T0500Z/
Northern Sacramento Valley-Central Sacramento Valley-
Southern Sacramento Valley-Carquinez Strait and Delta-
Northern San Joaquin Valley-
Mountains Southwestern Shasta County to Western Colusa County-
Northeast Foothills/Sacramento Valley-Motherlode-
Including the cities of Redding, Red Bluff, Chico, Oroville,
Marysville/Yuba City, Sacramento, Fairfield/Suisun, Stockton,
Modesto, Alder Springs, Paradise, Grass Valley, and Jackson
1033 AM PDT Mon Jun 20 2022

…HEAT ADVISORY IN EFFECT FROM 10 AM TUESDAY TO 10 PM PDT
WEDNESDAY…

* WHAT…Hot temperatures with highs 99 to 108 in the Valley, 95
to 105 in the foothills. Overnight lows 64 to 73 in the Valley,
68 to 78 in the foothills.

* WHERE…Sacramento Valley, Northern San Joaquin Valley,
Carquinez Strait and Delta, and adjacent foothills.

* WHEN…From 10 AM Tuesday to 10 PM PDT Wednesday.

* IMPACTS…Hot temperatures may cause heat illnesses to occur.
Widespread moderate heat risk expected in the Valley; moderate
to high heat risk in the foothills.

* ADDITIONAL DETAILS…Hottest day will be on Tuesday for the
Delta, northern San Joaquin Valley, and southern Sacramento
Valley. Hottest day will be on Wednesday for the central/
northern Sacramento Valley and foothills.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.