Climate Comfort Score
72/100
Good
NOAA 1991–2020 normals 63°F annual avg Public-domain federal data
Newport Beach Harbor, CA Climate
Annual temperature, rainfall, and a comfort score, sourced from NOAA NCEI's 1991–2020 normals →
- 63°F
- Avg annual temp
- 72/100
- Comfort score
- 9.4"
- Annual precip
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Newport Beach Harbor
Newport Beach Harbor, California averages 63°F a year and scores 72/100 on the comfort index - good, milder than 66% of U.S. cities.
- 63°F
- yearly average temperature, NOAA normal
- 72/100
- comfort score, milder than 66% of U.S. cities
- 9.4"
- precipitation, annual total
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
63°F (17°C)
Avg High
68°F
Avg Low
57°F
Annual Precip
9.4"
Annual Snow
0.0"
Comfort Score
72/100
Good
Avg Annual Temperature
63°F
30-year mean (NOAA NCEI)
Annual Precipitation
9.4"
Liquid-equivalent total
Comfort score vs national 100-point ceiling (Newport Beach Harbor) 72.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Good for the Newport Beach Harbor area.
How Newport Beach Harbor compares to every U.S. city
Newport Beach Harbor's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
72 Top 34% higher than 66% 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 Newport Beach Harbor
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Newport Beach Harbor 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 | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 65°F (18°C) | 50°F (10°C) | 57°F (14°C) | 2.2" | 0.0" | 0.0 | 0.0 |
| February | 63°F (17°C) | 51°F (11°C) | 57°F (14°C) | 2.4" | 0.0" | 0.0 | 0.0 |
| March | 65°F (18°C) | 53°F (12°C) | 59°F (15°C) | 1.3" | 0.0" | 0.0 | 0.0 |
| April | 66°F (19°C) | 55°F (13°C) | 61°F (16°C) | 0.6" | 0.0" | 0.0 | 0.0 |
| May | 67°F (19°C) | 58°F (15°C) | 63°F (17°C) | 0.2" | 0.0" | 0.0 | 0.0 |
| June | 68°F (20°C) | 62°F (16°C) | 65°F (18°C) | 0.1" | 0.0" | 0.0 | 0.0 |
| July | 72°F (22°C) | 65°F (18°C) | 68°F (20°C) | 0.0" | 0.0" | 0.0 | 0.0 |
| August | 73°F (23°C) | 66°F (19°C) | 69°F (21°C) | 0.0" | 0.0" | 0.0 | 0.1 |
| September | 74°F (23°C) | 64°F (18°C) | 69°F (21°C) | 0.1" | 0.0" | 0.0 | 0.1 |
| October | 73°F (23°C) | 60°F (16°C) | 67°F (19°C) | 0.3" | 0.0" | 0.0 | 0.3 |
| November | 68°F (20°C) | 55°F (13°C) | 61°F (16°C) | 0.6" | 0.0" | 0.0 | 0.1 |
| December | 64°F (18°C) | 50°F (10°C) | 57°F (14°C) | 1.6" | 0.0" | 0.0 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 2.2"
6.4 days with precipitation
February 2.4"
6.6 days with precipitation
March 1.3"
4.8 days with precipitation
April 0.6"
2.7 days with precipitation
May 0.2"
1.5 days with precipitation
June 0.1"
0.6 days with precipitation
July 0.0"
0.6 days with precipitation
August 0.0"
0.2 days with precipitation
September 0.1"
0.5 days with precipitation
October 0.3"
2.0 days with precipitation
November 0.6"
3.2 days with precipitation
December 1.6"
5.7 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
N/A
50% probability date
Last Spring Freeze
N/A
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,318
Higher = more heating needed
Cooling Degree Days
509
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
What Newport Beach Harbor's climate means for you
Newport Beach Harbor runs 63°F a year - peaking in August, coldest in December.
- Energy bills track 1,318 heating and 509 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: Newport Beach Harbor, CA
In Newport Beach Harbor, California, the NOAA 1991–2020 climate normals put the annual average temperature at 63°F, ranging from a mean daily high of 68°F to a mean daily low of 57°F. August is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00046175, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Beyond temperature, Newport Beach Harbor averages 9.4 inches of precipitation annually, with negligible snowfall - a real factor for anyone planning to live, garden, or travel here. Growing-season length varies with elevation and microclimate. Turning to energy use, 1,318 heating degree days and 509 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Newport Beach Harbor scores 72/100 (Good), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for August-driven heat, or deep winter for December-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Newport Beach Harbor, CA? ▼
The average annual temperature in Newport Beach Harbor, California is 63°F. The warmest month averages 74°F (23°C) and the coldest averages 50°F (10°C).
How much rain does Newport Beach Harbor get? ▼
Newport Beach Harbor receives 9.4 inches of precipitation annually. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Newport Beach Harbor? ▼
Newport Beach Harbor has a climate comfort score of 72/100 (Good), milder than 66% of U.S. cities in the PlainClimate database.
When is the growing season in Newport Beach Harbor? ▼
Growing season data is not available for Newport Beach Harbor.
How much energy does heating and cooling require in Newport Beach Harbor? ▼
Newport Beach Harbor has 1,318 heating degree days and 509 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 Newport Beach Harbor climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from weather station USC00046175 near Newport Beach Harbor.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00046175. 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.