US National Weather Service Sacramento California

Midafternoon temperatures are around 5-10 cooler than yesterday for interior NorCal. Most Valley locations are reporting temperatures in the low to mid 70s with 50s-70s across the mountains and foothills.

While isolated rain/snow showers and thunderstorms are forecast tomorrow in the mountains, expect mostly dry and breezy conditions in the Sacramento Valley. (Best opportunity for an isolated shower in the Valley would be in the far northern Sacramento Valley). As always, be sure to practice fire safety and avoid using equipment that can create sparks.

In addition to snow shower chances in the mountains tomorrow, can't rule out the slight chance of a thunderstorm (or thundersnow at certain elevations). If you have hiking, camping, outdoor plans in the mountains, be weather-aware: when thunder roars, go indoors!

Cooler temperatures return to interior NorCal today through the end of the week as a weather system moves through the area. Temperatures will warm back up to near normal by early next week.

UPDATE: The Winter Weather Advisory has been extended to include the crest of the northern Sierra Nevada. Snow showers are expected to increase late tonight and Thursday and may impact travel over the higher passes by Thursday evening. Check quickmap.dot.ca.gov for the latest updates on road conditions.

A Winter Weather Advisory is in effect for elevations above 4500 feet beginning at 11 PM tomorrow evening to 11 AM Thursday. Campers and hikers, especially around Lassen National Park, should prepare for winter conditions. Mountain travel impacts are also possible #CAwx

Here are the expected low temperatures across interior NorCal for Monday morning. A Dense Fog Advisory is in effect for portions of the Central Valley later tonight through Monday morning.

Here are your interior NorCal temperatures at 7 PM. Look for patchy fog to develop early this evening then a Dense Fog Advisory is in effect for portions of the Valley later tonight through the Monday morning commuter hours.

A Dense Fog Advisory will go in effect tonight at 10PM for portions of the Valley and Delta and continue through 11AM Monday. Slow down & use low beam headlights while driving in fog!

Here is a look at our 72 hour rain totals. Many locations saw between a half an inch to an inch and a half! Stay tuned for more wet weather headed our way mid-week weather.gov/STO

Here are some 72 hour rainfall totals for the interior NorCal region. Downtown Sacramento received 1.05 inches through the period.

Lunch time temperature check-in! Here's the latest observations for select locations across interior NorCal.

Chain controls are in place for summit areas of Interstate 80, Highway 50 and Highway 88. For the lastest road conditions call CALTRANS at 1-800-427-7623.

Heavy snow with hazardous driving conditions over the Sierra!

Voting has begun for the October photo of the month! To vote for your favorite, simply "like" the photo. The photo with the most likes by Tuesday November 3rd will be featured as our cover photo for the entire month! Thanks to all those who submitted! You can submit your photo of interior NorCal weather for the November contest now in the comments below with a short description of where the photo was taken. The photo you submit must be taken by you and cannot have been submitted for a previous month. Only one photo entry per person is accepted each month. Pictures taken in interior NorCal are preferred. Remember, horizontal pictures work best!

Good morning NorCal! Here's today's high temperature forecast to help kickstart your day.

Showers increasing late this afternoon, another heavy burst of snow likely over the Sierra through 8 pm.

Watch out for areas of dense fog this morning in parts of the Central Valley and Delta.

Polar-orbiting captured this image of the Golden State this Halloween afternoon. Mostly clear skies for many throughout California today with some areas of smoke in the central Sierra.

The forecast isn't looking too spooky for NorCal tonight. It will get a bit chilly once the sun sets though. Keep an eye out for the full moon too!

Scattered showers continue to move across the area bringing periods of light to moderate rain in the Valley and foothills. Snow continues to fall in the mountains. Scattered precipitation will continue into the evening before dry weather returns tomorrow.

Mild temperatures occurring early this afternoon across interior NorCal. Valley & foothill temperatures are in the 70s-low 80 with 60s-70s in the mountains.

Don't forget to turn your clocks back one hour before you go to bed tonight! Daylight Saving Time ends at 2 am tomorrow morning. This is also a good time to check the batteries in your smoke & carbon monoxide detectors & NOAA Weather Radio !

Happy Halloween from NWS Sacramento! Sunny skies and dry weather continue across interior NorCal this Halloween weekend.

Here's our view of an almost full moon rising earlier this evening. Tomorrow you'll see the first Halloween full moon in the area since 2001 (Pacific Time)! It's also the 2nd full moon of the month, known as a blue moon. Also, don't forget to adjust your clock back tomorrow night!

Want to try something different for Halloween pumpkin carving this year? Try some NOAA themed templates, like this tornado! bit.ly/2HHrUkt

Reminder - clocks fall back 1 hour on Sunday morning as we transition from Daylight Time to Standard Time. It's also a good time to check and make sure the batteries in your smoke detectors and NOAA Weather Radio are functioning.

We know folks are eagerly waiting for rain, but unfortunately dry weather will continue this weekend. Some local gusts of 15-25 mph will develop tonight and into Saturday morning & again Saturday night and into Sunday morning, mainly for portions of the northern Sierra and west side of the Sac Valley. Always practice fire safety!

Above normal daytime temperatures will continue across interior NorCal through next week. Normal Valley temperatures for this time of year are in the upper 60s - low 70s, but forecast highs are around 5-15 warmer.

A warm and dry Halloween weekend!

So what do meteorologists do in quiet weather? One thing is provide maintenance for our network of weather stations spread across our area (over 90!) Each station needs to be checked & cleaned, sometimes recalibrated or repaired. Sometimes there are hazards like wasp nests!

Our GOES-West natural color imagery reveals clear skies throughout the Sacramento Valley and northern Sierra Nevada this afternoon. Note the stratus clouds just off the Sonoma and Mendocino Coasts, as well as smoke from the Creek Fire in Fresno County.

Lunchtime temps are sitting comfortably in the upper 60s to middle 70s with sunny skies across the region. Temps will climb another 5 to 10 degrees by the time the afternoon wraps up.