US West Climate Update
NOAA West — CA, NV
Latest temperature anomaly
Monthly temperature anomaly history
Computed from NOAA Climate at a Glance regional tavg. Gold line uses the 1961–1990 comparison baseline; the lighter line uses NOAA's 1901–2000 source-native baseline.
US West – Monthly Temperature – All Years
Each line represents one year of monthly mean temperatures.
NOAA Climate at a Glance — regional tavg (monthly absolute °C).
Shifting Seasons
Warm / cold seasonsHow spring and autumn have shifted in US West. Spring is defined as the date monthly temperatures first rise above the long-term annual mean (12.3°C, from 1950–1979); autumn is the date they fall back below it. Temperature swings 20.4°C peak-to-peak across the year - a classic four-seasons rhythm.
Baseline vs recent monthly temperature climatology. Biggest warming: Jun (+2.0°C).
NOAA Climate at a Glance — regional tavg.
Latest precipitation anomaly
Member states (2)
States grouped under the NOAA West climate region (NOAA code 109).
Hottest & Coolest in US West this month
1-month anomaly vs 1961–1990 across the 2 members we cover. Click a name to open its profile.
Warmest
- 1.🇺🇸Nevada+7.18°C
- 2.☀️California+7.01°C
Coolest
- 1.☀️California+7.01°C
- 2.🇺🇸Nevada+7.18°C
Data source
- NOAA Climate at a Glance — Regional time series · NOAA code 109 · Open at NOAA
- Two-baseline model — comparison baseline 1961–1990; native baseline 1901–2000. Methodology →