Climate Comfort Score
52/100
Moderate
2026 data Public-data reference. official source
Headworks Portland Wtr B, OR Climate
Temperature, precipitation, and comfort score from NOAA NCEI 1991-2020 normals →
30-year climate normals from 1 weather station (1991-2020).
Headworks Portland Wtr B, Oregon has an average annual temperature of 51°F and a climate comfort score of 52/100 (Moderate). Annual precipitation totals 79.0", including 2.9" of snow. Based on NOAA 30-year normals (1991–2020).
Avg Temperature
51°F (11°C)
Avg High
59°F
Avg Low
44°F
Annual Precip
79.0"
Annual Snow
2.9"
Comfort Score
52/100
Moderate
Avg Annual Temperature
51°F
30-year mean (NOAA NCEI)
Annual Precipitation
79.0"
Plus 2.9" of snow
Comfort score vs national 100-point ceiling (Headworks Portland Wtr B) 52.0%
National median (≈55)
PlainClimate composite — temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Headworks Portland Wtr B area.
Warming context for Headworks Portland Wtr B
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Headworks Portland Wtr B 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 | 44°F (7°C) | 35°F (2°C) | 40°F (4°C) | 10.3" | 0.7" | 8.9 | 0.0 |
| February | 47°F (8°C) | 36°F (2°C) | 42°F (5°C) | 8.0" | 1.2" | 7.0 | 0.0 |
| March | 52°F (11°C) | 37°F (3°C) | 45°F (7°C) | 8.5" | 0.2" | 4.3 | 0.0 |
| April | 57°F (14°C) | 41°F (5°C) | 49°F (9°C) | 7.3" | 0.0" | 0.5 | 0.0 |
| May | 64°F (18°C) | 46°F (8°C) | 55°F (13°C) | 5.7" | 0.0" | 0.0 | 0.4 |
| June | 69°F (21°C) | 50°F (10°C) | 59°F (15°C) | 4.0" | 0.0" | 0.0 | 0.9 |
| July | 77°F (25°C) | 54°F (12°C) | 65°F (18°C) | 0.9" | 0.0" | 0.0 | 3.4 |
| August | 78°F (25°C) | 54°F (12°C) | 66°F (19°C) | 1.2" | 0.0" | 0.0 | 3.5 |
| September | 72°F (22°C) | 51°F (11°C) | 61°F (16°C) | 3.4" | 0.0" | 0.0 | 1.5 |
| October | 60°F (16°C) | 45°F (7°C) | 53°F (11°C) | 7.4" | 0.0" | 0.3 | 0.1 |
| November | 49°F (10°C) | 40°F (4°C) | 44°F (7°C) | 10.6" | 0.2" | 2.9 | 0.0 |
| December | 43°F (6°C) | 35°F (2°C) | 39°F (4°C) | 11.7" | 0.6" | 8.1 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 10.3"
Snow: 0.7"
21.8 days with precipitation
February 8.0"
Snow: 1.2"
18.3 days with precipitation
March 8.5"
Snow: 0.2"
21.4 days with precipitation
April 7.3"
20.3 days with precipitation
May 5.7"
16.1 days with precipitation
June 4.0"
12.4 days with precipitation
July 0.9"
5.4 days with precipitation
August 1.2"
5.0 days with precipitation
September 3.4"
8.7 days with precipitation
October 7.4"
16.9 days with precipitation
November 10.6"
Snow: 0.2"
21.2 days with precipitation
December 11.7"
Snow: 0.6"
22.8 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 18
50% probability date
Last Spring Freeze
March 27
50% probability date
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,144
Higher = more heating needed
Cooling Degree Days
209
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
Related Data
PlainEnviro
EPA environmental data — pollution, water quality, and environmental health by location
PlainCarbon
Carbon emissions data — greenhouse gas reporting and facility-level CO2 data
PlainHazard
Natural disaster data — weather-related hazards, FEMA declarations, and risk profiles
PlainAirData
EPA air quality data — AQI readings, pollutant levels, and air quality trends
Climate Guides
Climate Insight: Headworks Portland Wtr B, OR
The NOAA 1991–2020 climate normals describe Headworks Portland Wtr B, Oregon as a location with an annual average temperature of 51°F, ranging from a mean daily high of 59°F to a mean daily low of 44°F. August is typically the warmest month of the year, while December is the coldest. These thirty-year averages, computed from station USC00353770, smooth out year-to-year variability and give a baseline expectation for typical conditions in any given month.
Precipitation patterns matter as much as temperature for anyone planning to live, garden, or travel here. Headworks Portland Wtr B receives roughly 79.0 inches of precipitation each year, with 2.9 inches typically falling as snow. Growing-season length varies with elevation and microclimate, with the last spring freeze near March 27 and the first fall freeze near November 18. For energy use, 5,144 heating degree days and 209 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Headworks Portland Wtr B scores 52/100 (Moderate), 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 Headworks Portland Wtr B, OR? ▼
The average annual temperature in Headworks Portland Wtr B, Oregon is 51°F. The warmest month averages 78°F (25°C) and the coldest averages 35°F (2°C).
How much rain does Headworks Portland Wtr B get? ▼
Headworks Portland Wtr B receives 79.0 inches of precipitation annually, including 2.9 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Headworks Portland Wtr B? ▼
Headworks Portland Wtr B has a climate comfort score of 52/100 (Moderate). This score considers temperature mildness, humidity, precipitation, and extreme weather frequency.
When is the growing season in Headworks Portland Wtr B? ▼
Growing season data is not available for Headworks Portland Wtr B.
How much energy does heating and cooling require in Headworks Portland Wtr B? ▼
Headworks Portland Wtr B has 5,144 heating degree days and 209 cooling degree days annually. Higher heating degree days indicate greater winter energy demand, while higher cooling degree days indicate greater summer cooling needs.
Where does this Headworks Portland Wtr B climate data come from? ▼
All climate data comes from NOAA U.S. Climate Normals v1.0.1, covering the 30-year period from 1991 to 2020. Data is collected from weather station USC00353770. These 30-year averages are the standard reference for typical weather conditions.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00353770. 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
