Local Forecast

Exeter, California
Updated: Tuesday, December 12 2017 - 2:00 AM PST


High 63


Low 34


High 64
Wed night


Low 35


High 65
Thu night


Low 37

High 66

Local Forecast

WeatherForYou - Forecast Details
Updated: Tuesday, December 12 2017 - 2:00 AM PST
Location: Exeter, CA

Today... Hazy. Highs around 63°F. Southeast wind to 5 mph.

Tonight... Hazy. Lows around 34°F. East southeast wind to 5 mph.

Wednesday... Hazy. Highs around 64°F. Light wind.

Wednesday night... Hazy. Lows around 35°F. Light wind.

Thursday... Hazy. Highs around 65°F. Light wind.

Thursday night... Hazy. Lows around 37°F. Light wind.

Friday... Mostly sunny. Highs around 66°F. South southwest wind to 5 mph.

Friday night... Mostly clear. Lows around 36°F. Light wind.

Saturday... Mostly sunny. Highs around 63°F. Light wind.

Saturday night... Mostly clear. Lows around 37°F. Light wind.

Sunday... Mostly sunny. Highs around 65°F. Light wind.

Sunday night... Mostly clear. Lows around 39°F. Light wind.

Monday... Mostly sunny. Highs around 65°F. Light wind.

Area Forecast Discussion

National Weather Service - San Joaquin Valley / Hanford, CA
Issued: Tuesday, December 12 2017 - 1:26 AM PST

SYNOPSIS...High pressure will remain over the region for the next several days with continued dry weather.

DISCUSSION...Very dry easterly flow aloft continues this morning as the rex block pattern of high pressure to the north and low pressure to the south of the Central California Interior continues. Many many consecutive hours of single digit relative humidity values in the Sierra and foothills where the dry air can move in from the east. Other locations facing the San Joaquin Valley are being influenced by air that is not as dry.

With the calender saying mid December, the long nights. Dry air and clear skies are allowing for a continuation of cold overnight temperatures at most lower elevation locations and this trend will continue for the next several days. High pressure aloft has really locked in an inversion at elevations ranging from 4500 to around 7500 feet over the entire area and below this inversion there is very little mixing of air. Over the San Joaquin Valley, terrain is trapping the airmass and daily increases in particulate matter will cause increasingly dirtier air which may allow for additional fog formation. Over the past few nights, fog has been very isolated with most locations seeing visibility reduced to about one mile at the worst. This situation is not causing much concern from a traffic perspective and even though airport sensors may show a downward trend in visibility, values have not reached critical levels for impacts on transportation. Will continue to monitor overnight in case things change.

Forecast models keep the ridge in place over the region for the next several days, and shunt any incoming Pacific weather systems well to the north. One is progged to move across Oregon and into the Great Basin on Friday night however the only affect over the forecast area may be some high clouds.

Through Tuesday of next week, forecast models continue to hold the ridge in place for dry weather. After Tuesday, the latest ECMWF model develops and drives into the area a deep, closed low. It must be noted that this solution was NOT present on the previous run of this model. Additionally the GFS is hinting at a deepening trough and a fundamental shift in the longwave pattern way out Wednesday of next week. Model accuracy gets RATHER LIMITED this far into the future, therefore as of today this forecaster is not putting too much confidence in this change in the pattern. The pattern will undoubtedly change sometime and maybe for only for a short time. As of this morning a wait and see approach seems to be the most reasonable way to proceed.

AVIATION... Widespread MVFR visibility in haze and mist will persist in the San Joaquin Valley, with areas of IFR and local LIFR/VLIFR in fog developing until 18Z Tuesday. Otherwise, VFR conditions will prevail over the central CA interior during the next 24 hours.

AIR QUALITY ISSUES... On Tuesday December 12 2017... Unhealthy in Kern County. Unhealthy for sensitive groups in Fresno... Kings and Tulare Counties. Fireplace/Wood Stove Burning Status is: No Burning Unless Registered in Fresno... Kings... Madera... Merced and Tulare Counties. No Burning For All in Kern County. Further information is available at Valleyair.org


The level of certainty for days 1 and 2 is high. The level of certainty for days 3 through 7 is high.

Certainty levels include low...medium...and high. Please visit www.weather.gov/hnx/certainty.php for additional information an/or to provide feedback.

HNX Watches/Warnings/Advisories... NONE.

Hazardous Weather Outlook

Hazardous Weather Outlook is currently unavailable...