607
FNUS76 KSTO 041940
FWSSTO

Spot Forecast for Amex RX...USFS
National Weather Service Sacramento CA
1240 PM PDT Thu Jun 4 2026

Forecast is based on ignition time of 0600 PDT on June 05.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Dry and warm conditions are expected Friday through the weekend.
Winds will be light overnight, shifting out of the west-
southwest by late morning with afternoon/evening gusts to 15-25
mph, strongest on Saturday. Daytime humidities expected in the
20s Friday to weekend, with a slight increase on Saturday.

Precipitation and thunderstorm (5-15%) chances are greatest
Monday-Tuesday, but accumulations are forecast less than 0.10".
Monday night has the best chance to see accumulating precipitation
around 20-30%.

48-Hour Probability for Rain Totals > 0.10" (Mon-Tue): 25-35%

.FRIDAY...

Sky/weather.........Sunny.
Max temperature.....82-86.
Min humidity........20-24 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southwest 5 to 10 mph in
                    the late morning and afternoon with afternoon
                    gusts up to 15 mph.
 Ridgetop...........Southwest 7 to 13 mph.
Mixing height.......4800 ft AGL.
Transport winds.....East around 7 mph shifting to the southwest
                    early in the morning 6 to 12 mph.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6 AM      9 AM      NOON      3 PM
Sky cover.......MCLEAR    MCLEAR    CLEAR     CLEAR
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............47        65        82        82
RH..............61        38        23        27
SL/VL wind......E 3G6     SW 2G6    SW 6G13   SW 7G16
Ridgetop wind...S 7       S 9       SW 9      SW 13
Mix hgt (ft)....500       1900      4300      4800
Transport wind..E 7       S 6       SW 10     SW 12

.FRIDAY NIGHT...

Sky/weather.........Mostly clear.
Min temperature.....44-48.
Max humidity........75-79 percent.
Wind (20 ft)........
 Slope/valley.......Southwest winds 4 to 8 mph early in the evening
                    becoming southeast 5 to 10 mph.
 Ridgetop...........Southwest 8 to 12 mph shifting to the southeast 9
                    to 13 mph.
Mixing height.......500 ft AGL.
Transport winds.....Southwest 6 to 10 mph shifting to the southeast
                    8 to 13 mph late in the evening.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6 PM      9 PM      MIDNGT    3 AM
Sky cover.......MCLEAR    MCLEAR    CLEAR     MCLEAR
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............78        62        52        48
RH..............32        59        75        75
SL/VL wind......W 6G15    S 2G8     SE 3G6    SE 3G7
Ridgetop wind...S 13      S 16      SE 8      SE 12
Mix hgt (ft)....3700      600       500       500
Transport wind..SW 10     S 6       SE 8      SE 8

.SATURDAY...

Sky/weather.........Sunny.
Max temperature.....73-77.
Min humidity........27-31 percent.
Wind (20 ft)........
 Slope/valley.......Light winds becoming southwest 7 to 12 mph with
                    gusts up to 15-25 mph early in the morning.
 Ridgetop...........Southeast winds 6 to 11 shifting to southwest
                    winds 10 to 15 mph.
Mixing height.......5600 ft AGL.
Transport winds.....South 9 to 14 mph shifting to the southwest 13
                    to 18 mph late in the morning.
CWR.................0 percent.
Chance of thunder...0 percent.

TIME (PDT)      6 AM      9 AM      NOON      3 PM
Sky cover.......MCLEAR    MCLEAR    MCLEAR    MCLEAR
CWR.............0         0         0         0
Chc of thdr (%).0         0         0         0
Temp............46        59        75        73
RH..............77        54        28        28
SL/VL wind......SE 3G9    S 6G14    SW 10G23  SW 9G23
Ridgetop wind...SE 9      S 11      S 12      SW 15
Mix hgt (ft)....500       2300      5300      5600
Transport wind..SE 9      S 11      SW 15     SW 18

.FORECAST DAYS 3 THROUGH 5...
.SUNDAY...
Clear. Lows in the lower 40s. Highs in the lower 70s. South winds
around 5 mph.
.MONDAY...
Partly cloudy. Lows in the lower 40s. Highs in the upper 60s.
South winds around 5 mph.
.TUESDAY...
Partly cloudy. Chance of rain. Lows in the lower 40s. Highs in
the mid 60s. South winds around 5 mph.

$$
Forecaster...DA
Requested by...Austin Bennett
Type of request...PRESCRIBED
.TAG 2614389.7/STO
.DELDT 06/04/26
.FormatterVersion 2.0.0
.EMAIL charles.daniel@usda.gov,andrew.kahana@usda.gov,austin.bennett@usda.gov