Saint Helena, California Weather
Saint Helena, California — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast, soil and crop conditions for Saint Helena, Napa County.
Tides, marine forecast and fishing conditions near Saint Helena. Tide source:
Full aviation weather for Saint Helena is published on the Charles M. Schulz Sonoma County Airport (KSTS) page, 30 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Saint Helena have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Saint Helena: Napa County Airport (KAPC) 36 km · Healdsburg Municipal Airport (KHES) 41 km · Marin County Airport - Gnoss Field (KDVO) 41 km · Nut Tree Airport (KVCB) 46 km · Yolo County Davis Woodland Winters Airport (KDWA) 54 km
Conditions reported at KSTS describe the airfield itself. Weather 30 km away can differ, particularly in terrain or near the coast. For conditions at Saint Helena specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Saint Helena.
About Saint Helena, California
Saint Helena rests in a valley sculpted by ancient forces, where the Napa River’s slow, deliberate curves mark the land. It lies 13.9 miles east-north-east of Santa Rosa, CA (from Santa Rosa, CA: bearing 71°T), and is situated 7.8 miles south-east of Calistoga. Rolling hills, cloaked in a mosaic of vineyards and oak groves, rise on either side, their slopes catching the afternoon sun in shifting patterns of gold and shadow. The air here, particularly in the early morning, carries a crisp, clean scent, a blend of damp earth, ripening fruit, and the distant, faintest whisper of the Pacific. Buildings, many with a charming, weathered grace, line the main thoroughfare, their facades hinting at a history that unfolds with a gentle, unhurried pace. The story of Saint Helena is deeply intertwined with the fertile earth and the bounty it yields. Long before California’s celebrated wine country took shape, this land was home to indigenous peoples, their presence a subtle echo in the rustling leaves. Later, pioneers arrived, drawn by the promise of agriculture, and over time, the cultivation of grapes became the pulsing heart of Saint Helena’s economy. This dedication to viticulture has not only shaped its landscape but also its character, fostering a sense of quiet pride and an appreciation for the meticulous craft of winemaking. The world-renowned wineries that dot the surrounding hills are more than just businesses; they are landmarks, testaments to generations of dedication, and contribute to the sophisticated yet approachable atmosphere of Saint Helena.
Live animated radar for Saint Helena and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Saint Helena, Napa County, California |
| Coordinates | 38.505187°N, 122.470258°W |
| Timezone | Pacific Time (America/Los_Angeles) |
| ZIP Code(s) | 94574 |
| Area Code | 510 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Saint Helena, California Weather Page
This page provides live weather conditions and forecasts for Saint Helena, California, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Saint Helena includes coordinates 38.505187°N, 122.470258°W, situated in Napa County. ZIP code 94574. Telephone area code: 510. Timezone: Pacific Time (America/Los_Angeles).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
