Climate Comfort Score
48/100
Moderate
Temperature, precipitation, and comfort score from NOAA NCEI 1991–2020 normals →
30-year climate normals from 1 weather station (1991-2020).
The climate verdict for Startup
Startup, Washington averages 52°F a year and scores 48/100 on the comfort index - moderate, milder than 18% of U.S. cities.
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
52°F (11°C)
Avg High
62°F
Avg Low
42°F
Annual Precip
68.3"
Comfort Score
48/100
Moderate
Climate Comfort Score
48/100
Moderate
Avg Annual Temperature
52°F
30-year mean (NOAA NCEI)
Annual Precipitation
68.3"
Liquid-equivalent total
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Moderate for the Startup area.
Startup's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
48 Top 82% higher than 18% 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
Zooming out from Startup's own normal, the chart below shows how the U.S. land temperature anomaly has tracked the global mean since 1900 - the most recent decade sits warmer than the 30-year mean shown here.
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 47°F (9°C) | 34°F (1°C) | 41°F (5°C) | 8.9" | 12.1 | 0.0 |
| February | 51°F (10°C) | 34°F (1°C) | 42°F (6°C) | 5.9" | 10.7 | 0.0 |
| March | 55°F (13°C) | 36°F (2°C) | 45°F (7°C) | 6.8" | 7.3 | 0.0 |
| April | 60°F (16°C) | 39°F (4°C) | 50°F (10°C) | 5.9" | 2.0 | 0.0 |
| May | 67°F (19°C) | 44°F (7°C) | 56°F (13°C) | 5.0" | 0.3 | 0.1 |
| June | 71°F (22°C) | 49°F (9°C) | 60°F (15°C) | 3.8" | 0.0 | 0.6 |
| July | 78°F (25°C) | 52°F (11°C) | 65°F (18°C) | 1.5" | 0.0 | 2.3 |
| August | 78°F (26°C) | 51°F (11°C) | 65°F (18°C) | 1.7" | 0.0 | 1.6 |
| September | 73°F (23°C) | 47°F (8°C) | 60°F (16°C) | 3.5" | 0.0 | 0.6 |
| October | 62°F (17°C) | 42°F (5°C) | 52°F (11°C) | 7.1" | 2.4 | 0.0 |
| November | 52°F (11°C) | 37°F (3°C) | 45°F (7°C) | 9.8" | 7.2 | 0.0 |
| December | 47°F (8°C) | 34°F (1°C) | 40°F (4°C) | 8.4" | 11.1 | 0.0 |
Average monthly rainfall
19.8 days with precipitation
16.9 days with precipitation
20.0 days with precipitation
18.4 days with precipitation
15.3 days with precipitation
14.1 days with precipitation
6.8 days with precipitation
6.5 days with precipitation
10.9 days with precipitation
17.2 days with precipitation
20.3 days with precipitation
19.7 days with precipitation
First Fall Freeze
October 25
50% probability date
Last Spring Freeze
April 15
50% probability date
Growing Season
193 days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
5,024
Higher = more heating needed
Cooling Degree Days
147
Higher = more cooling needed
Warmest Month
August
Coldest Month
December
What Startup's climate means for you
Startup runs 52°F a year - peaking in August, coldest in December.
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
In Startup, Washington, the NOAA 1991–2020 climate normals put the annual average temperature at 52°F, ranging from a mean daily high of 62°F to a mean daily low of 42°F. August is typically the warmest month of the year, while December is the coldest. As thirty-year averages computed from station USC00458034, these numbers smooth out year-to-year noise into a working baseline for a typical month.
Anyone planning to live, garden, or travel in Startup should weigh precipitation alongside temperature: the annual average runs 68.3 inches, predominantly as rainfall. The frost-free season averages 193 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near April 15 and the first fall freeze near October 25. And on the energy front, 5,024 heating degree days and 147 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Startup scores 48/100 (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.
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00458034. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
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.