Napa River near St. Helena
3.9 mi- Level
- 0.5 ft
Forecast peak 1.1 ft Sat 7 AM
Reading from Sat 6:15 AM · NWS gauge page
Appearance
Starts in 40 min
Issued for this forecast zone · National Weather Service San Francisco CA
What
Up to 1.9ft of inundation above ground level is possible in low-lying areas near shorelines and tidal waterways.
Impacts
High tides will result in flooding of low-lying infrastructure, isolated road closures, and coastal erosion. Rising tides will bring water and waves farther up the beach than normal, restricting escape from beaches and coastal areas.
Additional details
At the San Francisco tidal gauge, high tide is expected to be 1.1 ft above normal (6.9 ft MLLW) at 10:39 AM Saturday 10/24, 1.5 ft above normal (7.3 ft MLLW) at 11:07 AM Sunday 10/25, 1.6 ft above normal (7.4 ft MLLW) at 11:39 AM Monday 10/26, 1.8 ft above normal (7.6 ft MLLW) at 12:15 PM Tuesday 10/27, 1.9 ft above normal (7.7 ft MLLW) at 12:56 PM Wednesday 10/28, and 1.7 ft above normal (7.5 ft MLLW) at 01:43 PM Thursday 10/29. These predictions include up to 1.0 ft of surge that will enhance the astronomical tide and flooding threat. High tide varies up to 90 minutes earlier or later along the Pacific Coast and through the San Francisco Bay, respectively.
Precautionary actions
If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property.
Areas: San Francisco; North Bay Interior Valleys; San Francisco Bay Shoreline; Northern Monterey Bay; Southern Monterey Bay and Big Sur Coast
See it on weather.gov (opens in a new tab)Observed 6:54 AM PDT at KAPC
Clear and 55°13°.
Today: low 42°6° (likely 42°6° to 56°13°), high 76°24° (likely 74°23° to 78°26°).
Now 55°13°
Clear
No precipitation expected in the next 2 hours.
From forecast models
| Hour | Conditions | Temperature | Feels like | Precipitation | Wind | Humidity | Cloud cover | UV index |
|---|---|---|---|---|---|---|---|---|
| Sat 7a | Sunny | 46°8° (likely 46°8° to 59°15°) | 44°7° | 0% | 6 mph10 km/h from NW, gusts 9 mph14 km/h | 54% | 0% | 0 |
| Sat 8a | Sunny | 47°8° (likely 47°8° to 59°15°) | 44°7° | 0% | 6 mph10 km/h from NW, gusts 8 mph14 km/h | 56% | 0% | 0 |
| Sat 9a | Sunny | 54°12° (likely 54°12° to 63°17°) | 54°12° | 0% | 7 mph11 km/h from N, gusts 5 mph8 km/h | 52% | 0% | 0 |
| Sat 10a | Sunny | 60°16° (likely 60°16° to 65°18°) | 60°16° | 0% | 7 mph11 km/h from NNE, gusts 7 mph11 km/h | 46% | 0% | 1 |
| Sat 11a | Sunny | 65°18° (likely 65°18° to 70°21°) | 65°18° | 0% | 7 mph11 km/h from NNE, gusts 12 mph19 km/h | 42% | 0% | 3 |
| Sat 12p | Sunny | 70°21° (likely 69°21° to 73°23°) | 70°21° | 0% | 6 mph10 km/h from NNE, gusts 10 mph16 km/h | 38% | 0% | 4 |
| Sat 1p | Sunny | 73°23° (likely 71°22° to 76°24°) | 73°23° | 0% | 5 mph8 km/h from NE, gusts 7 mph12 km/h | 34% | 0% | 4 |
| Sat 2p | Sunny | 75°24° (likely 73°23° to 78°26°) | 75°24° | 0% | 2 mph3 km/h from E, gusts 6 mph10 km/h | 32% | 0% | 4 |
| Sat 3p | Sunny | 76°24° (likely 74°23° to 78°26°) | 76°24° | 0% | 2 mph3 km/h from ESE, gusts 5 mph9 km/h | 32% | 0% | 3 |
| Sat 4p | Sunny | 76°24° (likely 73°23° to 77°25°) | 76°24° | 0% | 1 mph2 km/h from SSE, gusts 6 mph10 km/h | 32% | 0% | 2 |
| Sat 5p | Sunny | 74°23° (likely 71°22° to 74°23°) | 75°24° | 0% | 1 mph2 km/h from S, gusts 10 mph15 km/h | 34% | 0% | 2 |
| Sat 6p | Clear | 70°21° (likely 66°19° to 70°21°) | 70°21° | 0% | 0 mph0 km/h, gusts 11 mph18 km/h | 43% | 0% | 1 |
| Sat 7p | Clear | 62°17° (likely 61°16° to 65°18°) | 62°17° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 54% | 0% | 0 |
| Sat 8p | Clear | 58°14° (likely 58°14° to 62°17°) | 58°14° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 62% | 23% | 0 |
| Sat 9p | Clear | 55°13° (likely 55°13° to 60°16°) | 55°13° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 65% | 0% | 0 |
| Sat 10p | Clear | 53°12° (likely 53°12° to 58°14°) | 53°12° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 68% | 1% | 0 |
| Sat 11p | Clear | 51°11° (likely 51°11° to 56°13°) | 51°11° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 71% | 5% | 0 |
| Sun 12a | Mostly clear | 50°10° (likely 50°10° to 56°13°) | 50°10° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 73% | 14% | 0 |
| Sun 1a | Mostly clear | 49°9° (likely 49°9° to 55°13°) | 49°9° | 0% | 0 mph0 km/h, gusts 1 mph2 km/h | 73% | 41% | 0 |
| Sun 2a | Clear | 48°9° (likely 48°9° to 53°12°) | 48°9° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 74% | 40% | 0 |
| Sun 3a | Clear | 46°8° (likely 46°8° to 52°11°) | 46°8° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 76% | 39% | 0 |
| Sun 4a | Partly cloudy | 45°7° (likely 45°7° to 52°11°) | 45°7° | 0% | 0 mph0 km/h, gusts 2 mph2 km/h | 79% | 48% | 0 |
| Sun 5a | Partly cloudy | 45°7° (likely 45°7° to 52°11°) | 45°7° | 0% | 0 mph0 km/h, gusts 1 mph2 km/h | 78% | 58% | 0 |
| Sun 6a | Cloudy | 43°6° (likely 43°6° to 53°12°) | 43°6° | 0% | 0 mph0 km/h, gusts 2 mph3 km/h | 82% | 68% | 0 |
| Sun 7a | Cloudy | 43°6° (likely 43°6° to 53°12°) | 43°6° | 0% | 0 mph0 km/h, gusts 2 mph4 km/h | 86% | 70% | 0 |
| Sun 8a | Partly sunny | 43°6° (likely 43°6° to 53°12°) | 43°6° | 0% | 2 mph3 km/h from NE, gusts 2 mph3 km/h | 87% | 69% | 0 |
| Sun 9a | Partly sunny | 50°10° (likely 50°10° to 57°14°) | 50°10° | 0% | 2 mph3 km/h from NE, gusts 2 mph4 km/h | 76% | 63% | 1 |
| Sun 10a | Partly sunny | 58°14° (likely 56°13° to 63°17°) | 58°14° | 0% | 2 mph3 km/h from NE, gusts 4 mph6 km/h | 64% | 68% | 2 |
| Sun 11a | Cloudy | 64°18° (likely 62°17° to 68°20°) | 64°18° | 0% | 2 mph3 km/h from SE, gusts 5 mph8 km/h | 53% | 68% | 3 |
| Sun 12p | Cloudy | 69°21° (likely 66°19° to 71°22°) | 69°21° | 0% | 2 mph3 km/h from SE, gusts 6 mph10 km/h | 48% | 81% | 4 |
| Sun 1p | Cloudy | 72°22° (likely 69°21° to 73°23°) | 72°22° | 0% | 2 mph3 km/h from SE, gusts 7 mph11 km/h | 44% | 82% | 4 |
| Sun 2p | Cloudy | 73°23° (likely 70°21° to 74°23°) | 73°23° | 0% | 2 mph3 km/h from S, gusts 7 mph11 km/h | 43% | 84% | 4 |
| Sun 3p | Cloudy | 74°23° (likely 70°21° to 74°23°) | 74°23° | 0% | 2 mph3 km/h from S, gusts 8 mph13 km/h | 43% | 86% | 3 |
| Sun 4p | Cloudy | 73°23° (likely 69°21° to 73°23°) | 73°23° | 0% | 2 mph3 km/h from S, gusts 9 mph15 km/h | 43% | 87% | 3 |
| Sun 5p | Cloudy | 72°22° (likely 67°19° to 72°22°) | 72°22° | 0% | 1 mph2 km/h from SSW, gusts 10 mph17 km/h | 43% | 87% | 1 |
| Sun 6p | Cloudy | 68°20° (likely 63°17° to 68°20°) | 68°20° | 0% | 1 mph2 km/h from SSW, gusts 9 mph15 km/h | 52% | 89% | 0 |
| Sun 7p | Cloudy | 63°17° (likely 59°15° to 63°17°) | 63°17° | 0% | 1 mph2 km/h from SSW, gusts 9 mph15 km/h | 62% | 89% | 0 |
| Sun 8p | Cloudy | 57°14° (likely 57°14° to 59°15°) | 57°14° | 0% | 0 mph0 km/h, gusts 9 mph14 km/h | 70% | 89% | 0 |
| Sun 9p | Partly cloudy | 54°12° (likely 54°12° to 56°13°) | 54°12° | 0% | 0 mph0 km/h, gusts 5 mph9 km/h | 77% | 64% | 0 |
| Sun 10p | Clear | 51°11° (likely 51°11° to 55°13°) | 51°11° | 0% | 0 mph0 km/h, gusts 7 mph11 km/h | 82% | 9% | 0 |
| Sun 11p | Clear | 50°10° (likely 50°10° to 53°12°) | 50°10° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 85% | 6% | 0 |
| Mon 12a | Clear | 48°9° (likely 48°9° to 51°11°) | 48°9° | 0% | 0 mph0 km/h, gusts 4 mph6 km/h | 88% | 8% | 0 |
| Mon 1a | Clear | 47°8° (likely 47°8° to 50°10°) | 47°8° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 91% | 8% | 0 |
| Mon 2a | Clear | 46°8° (likely 46°8° to 48°9°) | 46°8° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 93% | 10% | 0 |
| Mon 3a | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 95% | 11% | 0 |
| Mon 4a | Clear | 44°7° (likely 44°7° to 48°9°) | 44°7° | 0% | 0 mph0 km/h, gusts 4 mph7 km/h | 96% | 22% | 0 |
| Mon 5a | Fog | 43°6° (likely 43°6° to 48°9°) | 43°6° | 0% | 0 mph0 km/h, gusts 3 mph5 km/h | 97% | 32% | 0 |
| Mon 6a | Fog | 42°6° (likely 42°6° to 48°9°) | 42°6° | 0% | 0 mph0 km/h, gusts 5 mph8 km/h | 100% | 56% | 0 |
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Today: Sunny. High near 76, with temperatures falling to around 74 in the afternoon. Northeast wind 1 to 7 mph.
Tonight: Mostly clear. Low around 42, with temperatures rising to around 45 overnight. Wind around 0 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Best day outdoors this week: the one dry, mild day the forecasts agree on (high 76°24°).
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Official NWS forecast
Day: Mostly sunny. High near 74, with temperatures falling to around 72 in the afternoon. Southeast wind around 2 mph.
Night: Areas of fog after 3am. Partly cloudy, with a low around 41. West northwest wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 8am. Mostly sunny, with a high near 71. West wind 0 to 7 mph.
Night: Areas of fog after 10pm. Mostly clear, with a low around 39.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 8am. Mostly sunny, with a high near 71.
Night: Partly cloudy, with a low around 41.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 9am. Mostly sunny, with a high near 69.
Night: Patchy fog after 4am. Mostly cloudy, with a low around 42.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 10am, then a chance of rain. Partly sunny, with a high near 66.
Night: A chance of rain before midnight, then a chance of rain and patchy fog between midnight and 2am, then areas of fog and a chance of rain. Mostly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog and a chance of rain before 8am, then a chance of rain and patchy fog. Partly sunny, with a high near 65.
Night: A chance of rain before 11pm, then areas of fog and a chance of rain. Mostly cloudy, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
20% chance
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Overnight
midnight–6 AM
Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Morning
6 AM–noon
Dry
Afternoon
noon–6 PM
Dry
Evening
6 PM–midnight
Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
Dry, high 76°, low 42°.
Dry, high 74°, low 41°.
Dry, high 71°, low 39°, cooling off.
Mostly dry, highs 64–71°.
Want the meteorologists’ reasoning? Read the NWS forecast discussion (MTR) (opens in a new tab)
No meaningful changes from yesterday’s forecast.
Forecast peak 1.1 ft Sat 7 AM
Reading from Sat 6:15 AM · NWS gauge page
Forecast peak 1.9 ft Sat 7 AM
Reading from Sat 6 AM · NWS gauge page
Reading from Fri 10:15 PM · NWS gauge page
Reading from Sat 2:55 AM · NWS gauge page
What this week’s weather means for heating, cooling, pipes and fresh air.
About 32% less heating than a typical week.
Heating degree days, base 65°F
47, 17 and 5°F are the test points heat pumps are rated at. About 1 hours are near freezing and damp, when outdoor units defrost more often.
Dry air outside (dew point 36°F).
Today, 10:00 AM–7:00 PM
Good stretch to open the windows.
Today’s expected high is about typical for the date.
On average 1°0° warmer than normal (daily mean temperature).
Rutherford weather by month: normals, records, snow and freeze dates
Sunrise 7:28 AM, sunset 6:19 PM.
Mostly clear 6:46 PM–1 AM, but the moon is 99% lit and up.
Waxing gibbous
97% lit · growing