Napa Cnty Arpt
Weather station · 38.2°N 122.3°W · 5 m above sea level
ICAO KAPCStation data since 1998
Record high
35.6°C
in 2025
Record low
3.9°C
in 2005
Average high
27.9°C
all years on record
17.3°C short of the record for 23 September
Today’s high 18.3°C against 35.6°C in 2025. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
46.1°C
- Date
- Tuesday, 6 September 2022
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Napa Cnty Arpt, United States
- Position
- 38.21°N 122.28°W · 5 m
Highest highest in available records since 1998. Source: NOAA GHCN-Daily.
All-time record low
−8.8°C
- Date
- Thursday, 5 December 2013
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Napa Cnty Arpt, United States
- Position
- 38.21°N 122.28°W · 5 m
Highest and lowest lowest in available records since 1998. Source: NOAA GHCN-Daily.
Where Napa Cnty Arpt is
38.21°N 122.28°W
Every year on record
1998 to 2026
Annual average · °C
Trend over 27 years with data: +0.42 °C per decade
Source: NOAA GHCN-Daily. Years the station did not cover are left as gaps, never joined across. The dashed line is a least squares trend through the years that have data.
Records by month
Jan
26.7°
−7.8°
Feb
27.2°
−6.0°
Mar
30.6°
−2.8°
Apr
32.8°
−3.9°
May
38.3°
−0.6°
Jun
43.3°
2.2°
Jul
41.1°
6.1°
Aug
41.1°
5.6°
Sep
46.1°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 18.3°C | 00:54 UTC | 13.9°C | 06:54 UTC |
| 2026-09-22 | 20.0°C | 21:54 UTC | 12.8°C | 14:54 UTC |
Nearby stations
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1998 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |
