Another chance for thunderstorms and rain showers is coming to SLO County
So far this month, the average high temperature at the San Luis Obispo County Regional Airport was 66.9 degrees. Typically, it is 75.3 degrees.
The Paso Robles Municipal Airport has reported an average high of 75.8, compared to the normal high for June is 88.6 degrees. In fact, the airport only saw a high of 60 degrees on June 6. This set a new monthly record low maximum temperature for the month.
However, an El Niño condition has developed in the equatorial Pacific and is forecast to strengthen through this winter. This condition typically produces warmer-than-average temperatures and above-normal rainfall along the Central Coast.
Much like last Monday and Tuesday, another upper-level low-pressure system will produce an unsettled weather pattern with rain showers and a chance of thunderstorms, and below-normal temperatures on Saturday into Sunday.
Temperatures will only reach the mid-60s in the inland valleys (Paso Robles), the low-60s in the coastal valleys (San Luis Obispo), and along the beaches on Sunday.
Monday and Tuesday should see gentle southerly winds, a deep marine layer with pockets of fog and mist during the night and morning, becoming partially clear during the afternoon.
A gradual warming trend, with increasing northwesterly winds and clearing skies during the afternoon will start Tuesday afternoon and continue through Friday. Temperatures are expected to return to normal by the following weekend, along with fresh to strong (19 to 31 mph) northwesterly winds along the coastline.
Surf report
A 3- to 5-foot northwesterly (290-degree, deep-water) swell (with an 8- to 12-second period) is expected along our coastline on Sunday through Monday, decreasing to 2 to 4 feet on Tuesday into Thursday.
Increasing northwesterly winds along the coastline will generate a 5- to 7-foot northwesterly (310-degree, deep-water) sea and swell (with a 5- to 8-second period) on Friday through next Sunday.
Seawater temperatures will range between 56 and 59 degrees through Friday, decreasing to 54 to 56 degrees on Saturday through next Sunday.
This week’s temperatures
LOWS AND HIGHS, PASO ROBLES
SUN | MON | TUE | WED | THU | FRI | SAT | SUN |
52, 67 | 53, 71 | 51, 76 | 52, 76 | 53, 77 | 54, 80 | 55, 81 | 57, 85 |
LOWS AND HIGHS, SAN LUIS OBISPO AND COASTAL VALLEYS
SUN | MON | TUE | WED | THU | FRI | SAT | SUN |
54, 62 | 55, 67 | 53, 68 | 54, 67 | 55, 67 | 56, 70 | 57, 72 | 57, 75 |
John Lindsey is a retired PG&E marine meteorologist. Email him at JohnLindseyLosOsos@gmail.com or follow him on Twitter @PGE_John.