Climate Comfort Score
87/100
Excellent
NOAA 1991–2020 normals 59°F annual avg Public-domain federal data
- 59°F
- Avg annual temp
- 87/100
- Comfort score
- 38.9"
- Annual precip
- 246d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Ukiah
Ukiah, California averages 59°F a year and scores 87/100 on the comfort index - excellent, milder than 89% of U.S. cities.
- 59°F
- annual average temperature (NOAA normal)
- 87/100
- comfort score, milder than 89% of U.S. cities
- 38.9"
- yearly precipitation total
- 246 days
- frost-free growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
59°F (15°C)
Avg High
73°F
Avg Low
45°F
Annual Precip
38.9"
Annual Snow
0.0"
Comfort Score
87/100
Excellent
Avg Annual Temperature
59°F
30-year mean (NOAA NCEI)
Annual Precipitation
38.9"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Ukiah) 87.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Ukiah area.
How Ukiah compares to every U.S. city
Ukiah's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
87 Top 11% higher than 89% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Ukiah
MethodologyUkiah's NOAA 1991-2020 normal sits inside a longer story: U.S. land temperatures have been tracking (and drifting from) the global mean since 1900, and the chart below shows that spread, with the most recent decade running warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 57°F (14°C) | 37°F (3°C) | 47°F (8°C) | 7.4" | 0.0" | 10.0 | 0.0 |
| February | 60°F (16°C) | 38°F (3°C) | 49°F (10°C) | 7.0" | 0.0" | 5.6 | 0.0 |
| March | 65°F (18°C) | 40°F (4°C) | 52°F (11°C) | 5.3" | 0.0" | 3.2 | 0.0 |
| April | 70°F (21°C) | 42°F (6°C) | 56°F (13°C) | 2.8" | 0.0" | 0.7 | 0.4 |
| May | 76°F (25°C) | 47°F (8°C) | 62°F (17°C) | 1.7" | 0.0" | 0.0 | 3.1 |
| June | 83°F (28°C) | 52°F (11°C) | 67°F (20°C) | 0.4" | 0.0" | 0.0 | 6.3 |
| July | 91°F (33°C) | 56°F (13°C) | 73°F (23°C) | 0.0" | 0.0" | 0.0 | 18.0 |
| August | 91°F (33°C) | 54°F (12°C) | 72°F (22°C) | 0.1" | 0.0" | 0.0 | 17.5 |
| September | 87°F (31°C) | 51°F (11°C) | 69°F (21°C) | 0.2" | 0.0" | 0.0 | 13.1 |
| October | 77°F (25°C) | 46°F (8°C) | 61°F (16°C) | 1.9" | 0.0" | 0.0 | 2.6 |
| November | 63°F (17°C) | 40°F (4°C) | 51°F (11°C) | 4.1" | 0.0" | 3.7 | 0.0 |
| December | 56°F (13°C) | 36°F (2°C) | 46°F (8°C) | 8.0" | 0.0" | 10.4 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 7.4"
12.5 days with precipitation
February 7.0"
11.9 days with precipitation
March 5.3"
10.2 days with precipitation
April 2.8"
7.8 days with precipitation
May 1.7"
5.0 days with precipitation
June 0.4"
1.6 days with precipitation
July 0.0"
0.1 days with precipitation
August 0.1"
0.2 days with precipitation
September 0.2"
0.7 days with precipitation
October 1.9"
3.6 days with precipitation
November 4.1"
9.8 days with precipitation
December 8.0"
13.7 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 20
50% probability date
Last Spring Freeze
March 19
50% probability date
Growing Season
246 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,030
Higher = more heating needed
Cooling Degree Days
834
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
What Ukiah's climate means for you
Ukiah runs 59°F a year - peaking in July, coldest in December.
- Gardeners get about 246 frost-free days, with the last spring freeze near March 19 - plan the planting calendar around it, not the regional average.
- Energy bills track 3,030 heating and 834 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Ukiah, CA
An annual average temperature of 59°F, ranging from a mean daily high of 73°F to a mean daily low of 45°F is what the NOAA 1991–2020 climate normals report for Ukiah, California. July is typically the warmest month of the year, while December is the coldest. That baseline comes from station USC00049122 and thirty years of averaging, so it reflects a typical month rather than any one year's swings.
Beyond temperature, Ukiah averages 38.9 inches of precipitation annually, with negligible snowfall - a real factor for anyone planning to live, garden, or travel here. The frost-free season averages 246 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 19 and the first fall freeze near November 20. Turning to energy use, 3,030 heating degree days and 834 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Ukiah scores 87/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. For planning purposes, look to the monthly tables above: shoulder seasons bring the mildest highs and lows, summer brings July-driven heat, and deep winter brings December-driven cold. Treat every figure here as a thirty-year average rather than a forecast - individual years routinely run warmer, cooler, wetter, or drier than the normal.
Frequently Asked Questions
What is the average temperature in Ukiah, CA? ▼
The average annual temperature in Ukiah, California is 59°F. The warmest month averages 91°F (33°C) and the coldest averages 36°F (2°C).
How much rain does Ukiah get? ▼
Ukiah receives 38.9 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Ukiah? ▼
Ukiah has a climate comfort score of 87/100 (Excellent), milder than 89% of U.S. cities in the PlainClimate database.
When is the growing season in Ukiah? ▼
Ukiah has approximately 246 frost-free days per year, with the last spring freeze around March 19 and the first fall freeze around November 20.
How much energy does heating and cooling require in Ukiah? ▼
Ukiah has 3,030 heating degree days and 834 cooling degree days annually, a heating-dominated climate. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Ukiah climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00049122 near Ukiah.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00049122. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.