Climate Comfort Score
95/100
Excellent
NOAA 1991–2020 normals 64°F annual avg Public-domain federal data
Oroville, CA Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
- 64°F
- Avg annual temp
- 95/100
- Comfort score
- 30.6"
- Annual precip
- 317d
- Growing season
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Oroville
Oroville, California averages 64°F a year and scores 95/100 on the comfort index - excellent, milder than 98% of U.S. cities.
- 64°F
- average temperature, NOAA 1991-2020 normal
- 95/100
- comfort score, milder than 98% of U.S. cities
- 30.6"
- yearly precipitation total
- 317 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
64°F (18°C)
Avg High
77°F
Avg Low
51°F
Annual Precip
30.6"
Comfort Score
95/100
Excellent
Avg Annual Temperature
64°F
30-year mean (NOAA NCEI)
Annual Precipitation
30.6"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Oroville) 95.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Oroville area.
How Oroville compares to every U.S. city
Oroville's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
95 Top 2% higher than 98% 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 Oroville
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Oroville captures average conditions across the spread shown, the most recent decade is 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 | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 58°F (14°C) | 40°F (4°C) | 49°F (9°C) | 5.8" | 5.3 | 0.0 |
| February | 62°F (17°C) | 42°F (6°C) | 52°F (11°C) | 5.6" | 2.2 | 0.0 |
| March | 68°F (20°C) | 46°F (8°C) | 57°F (14°C) | 4.7" | 0.7 | 0.1 |
| April | 74°F (23°C) | 48°F (9°C) | 61°F (16°C) | 2.2" | 0.1 | 0.8 |
| May | 82°F (28°C) | 54°F (12°C) | 68°F (20°C) | 1.4" | 0.1 | 6.6 |
| June | 91°F (33°C) | 59°F (15°C) | 75°F (24°C) | 0.6" | 0.0 | 17.3 |
| July | 97°F (36°C) | 63°F (17°C) | 80°F (27°C) | 0.0" | 0.0 | 27.4 |
| August | 96°F (35°C) | 61°F (16°C) | 78°F (26°C) | 0.1" | 0.0 | 25.4 |
| September | 90°F (32°C) | 57°F (14°C) | 73°F (23°C) | 0.4" | 0.0 | 15.7 |
| October | 79°F (26°C) | 51°F (11°C) | 65°F (18°C) | 1.3" | 0.0 | 3.3 |
| November | 66°F (19°C) | 45°F (7°C) | 55°F (13°C) | 2.9" | 2.1 | 0.0 |
| December | 58°F (14°C) | 40°F (4°C) | 49°F (9°C) | 5.5" | 5.5 | 0.0 |
Monthly Precipitation
Average monthly rainfall
January 5.8"
11.2 days with precipitation
February 5.6"
10.3 days with precipitation
March 4.7"
10.0 days with precipitation
April 2.2"
6.4 days with precipitation
May 1.4"
4.3 days with precipitation
June 0.6"
1.8 days with precipitation
July 0.0"
0.1 days with precipitation
August 0.1"
0.3 days with precipitation
September 0.4"
0.9 days with precipitation
October 1.3"
3.4 days with precipitation
November 2.9"
6.6 days with precipitation
December 5.5"
10.2 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
December 13
50% probability date
Last Spring Freeze
January 30
50% probability date
Growing Season
317 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,215
Higher = more heating needed
Cooling Degree Days
1,700
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Oroville's climate means for you
Oroville runs 64°F a year - peaking in July, coldest in January.
- Gardeners get about 317 frost-free days, with the last spring freeze near January 30 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,215 heating and 1,700 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: Oroville, CA
Oroville, California runs an annual average of 64°F, ranging from a mean daily high of 77°F to a mean daily low of 51°F, per NOAA's 1991–2020 climate normals. July is typically the warmest month of the year, while January is the coldest. Drawn from station USC00046521, these thirty-year averages smooth out year-to-year swings into a baseline for what a typical month looks like here.
Anyone planning to live, garden, or travel in Oroville should weigh precipitation alongside temperature: the annual average runs 30.6 inches, predominantly as rainfall. The frost-free season averages 317 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near January 30 and the first fall freeze near December 13. And on the energy front, 2,215 heating degree days and 1,700 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Oroville scores 95/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. The monthly tables above are the practical planning tool: mild highs and lows land in the shoulder seasons, July-driven heat peaks in summer, and January-driven cold sets in over deep winter. These are thirty-year averages, not a forecast - any single year can run warmer, wetter, drier, or cooler than the normal.
Frequently Asked Questions
What is the average temperature in Oroville, CA? ▼
The average annual temperature in Oroville, California is 64°F. The warmest month averages 97°F (36°C) and the coldest averages 40°F (4°C).
How much rain does Oroville get? ▼
Oroville receives 30.6 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Oroville? ▼
Oroville has a climate comfort score of 95/100 (Excellent), milder than 98% of U.S. cities in the PlainClimate database.
When is the growing season in Oroville? ▼
Oroville has approximately 317 frost-free days per year, with the last spring freeze around January 30 and the first fall freeze around December 13.
How much energy does heating and cooling require in Oroville? ▼
Oroville has 2,215 heating degree days and 1,700 cooling degree days annually, a fairly balanced heating/cooling split. 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 Oroville climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00046521 near Oroville.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00046521. 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.