Solarposition.org

Washington · United States · 47.86° N · 122.20° W

Solar position in Mill Creek

Sun position, daylight and the best solar panel angle for Mill Creek — computed for 47.86° N, 122.20° W, 115 m above sea level.

Sunrise today07:41107° ESE
Sunset today18:03253° WSW
Best panel angle37°year-round, facing south
Off-grid angle69°best for the darkest month

The sun right now

Azimuth180.0°
Elevation30.2°
At solar noon, 12:52Open on the sun map

Sun in Mill Creek today

Saturday, 24 October 2026 · local time UTC−7

EventTimeDirection / height
Astronomical dawn05:57sun 18° below horizon
Nautical dawn06:3312° below
Civil dawn07:096° below
Sunrise07:41107° ESE
Golden hour ends08:25sun 6° up
Solar noon12:5230.2° high
Golden hour starts17:19sun 6° up
Sunset18:03253° WSW
Civil dusk18:356° below
Nautical dusk19:1112° below
Astronomical dusk19:4718° below
Day length10 h 22 min

Sun path diagram for Mill Creek

Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.

15°30°45°60°75°N30°60°E120°150°S210°240°W300°330°June solstice6789101112131415161718192021EquinoxDecember solstice910111213141516Today
  • June solstice
  • Equinox
  • December solstice
  • Today

On the June solstice the sun reaches 65.6° at solar noon in Mill Creek; on the December solstice only 18.7°. Sunrise swings from 52° NE in June to 125° SE in December — a 73° arc along the horizon.

Sunrise, sunset and sun height by month

Values for the 21st of each month, local clock time including daylight saving time.

MonthSunriseSolar noonSunsetDay lengthNoon elevation
January07:4812:2016:529 h 04 min22.4°
February07:0412:2217:4110 h 37 min31.8°
March07:0913:1619:2312 h 14 min42.6°
April06:0813:0720:0714 h 00 min54.2°
May05:2313:0520:4815 h 25 min62.5°
June05:0913:1021:1116 h 02 min65.6°
July05:3213:1520:5715 h 25 min62.5°
August06:1213:1120:1013 h 58 min54.0°
September06:5413:0119:0812 h 14 min42.6°
October07:3712:5318:0810 h 32 min31.2°
November07:2311:5416:259 h 01 min22.1°
December07:5512:0716:188 h 23 min18.7°

A year of daylight in Mill Creek

Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.

00:0003:0006:0009:0012:0015:0018:0021:0000:00JanFebMarAprMayJunJulAugSepOctNovDec

Best solar panel angle in Mill Creek

Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.

37°collects the most energy over a year: 1268 kWh per kWp.

69°gives the most in the darkest month — the one an off-grid system is sized for.

40%50%60%70%80%90%100%0°10°20°30°40°50°60°70°80°90°Best year-round 37°Best worst-month 69°70°Yearly energyWorst-month energy
  • Yearly energy
  • Worst-month energy
TiltkWh/kWp per yearShare of best yearDecember kWh/kWp/dayBest ÷ worst month
0°105583%0.658.3×
15°119294%0.995.6×
30°126199%1.284.3×
37° year-round best1268100%1.383.8×
45°125799%1.483.4×
48° = latitude124898%1.513.2×
60°118293%1.602.8×
69° off-grid best110587%1.622.5×
70°109586%1.622.5×
90°84567%1.522.1×

A fixed array in Mill Creek produces the most over a year at 37°. The design month for an off-grid system is December: at 69° it makes 1.62 kWh per kWp a day, 17% more than at 37°, and costs 13% of the yearly total. Why steep panels win winter.

Off-grid solar in Mill Creek at 70°

Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 37° (year-round best).

0123456January: 1.78 (70°)1.8JanFebruary: 2.74 (70°)2.7FebMarch: 3.02 (70°)3.0MarApril: 3.42 (70°)3.4AprMay: 3.44 (70°)3.4MayJune: 3.34 (70°)3.3JunJuly: 3.74 (70°)3.7JulAugust: 3.96 (70°)4.0AugSeptember: 3.92 (70°)3.9SepOctober: 3.01 (70°)3.0OctNovember: 2.01 (70°)2.0NovDecember: 1.62 (70°)1.6Dec37°
MonthSun hours, flatSun hours at 70°kWh/kWp/day at 70°at 37°Mean temp.
January1.042.001.781.572.5 °C
February1.953.082.742.622.7 °C
March2.923.423.023.234.8 °C
April4.293.913.424.117.3 °C
May5.404.003.444.6111.5 °C
June5.923.933.344.7514.0 °C
July6.564.443.745.3017.1 °C
August5.564.703.965.0217.2 °C
September3.994.583.924.3014.2 °C
October2.313.453.012.949.4 °C
November1.222.282.011.804.9 °C
December0.841.821.621.381.9 °C
Year3.51 avg3.47 avg1095 kWh1268 kWh

Sizing example. To run a 1 kWh-per-day load through December on LiFePO4 batteries (charge controller, battery and inverter losses included) you need about 730 Wp of panels at 70°, versus 850 Wp at 37°. The steep array is 14% smaller for the same winter. Size your own system.

Row spacing in Mill Creek

Distance between rows of 2 m long panels (slope length) so that no row shades the next between 10:00 and 14:00 solar time on the winter solstice.

7.4 mrow pitch at 70°

5.9 mrow pitch at 37°

Row spacing calculator

How Mill Creek compares in the United States

Against the other 3,120 places in the United States with climate data, for a fixed array at its best angle.

3069thof 3,121 places in the United States for sunshine, shared: 3.51 peak sun hours a day on flat ground.

−16%solar energy a year compared with the average place in the United States: 1,268 against 1,515 kWh per kWp.

+56 mindaylight on the longest day, compared with New York City: 16 h 02 min against 15 h 06 min.

37°best year-round tilt here; across the United States it runs from 18° in Honolulu to 53° in Fairbanks.

Of the 3,121 places in the United States, Fortuna Foothills and 2 other places get the most sun (5.96 peak sun hours a day) and Juneau the least (2.38); Mill Creek ranks joint 3069th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 1.62 kWh a day here, against 2.55 kWh on average in the United States. The shortest day lasts 8 h 23 min, −52 min compared with New York City.

The sunniest places in the United States

Solar forecast for Mill Creek, next 48 hours

Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.

Loading the latest forecast…

Questions about the sun in Mill Creek

What is the best solar panel angle in Mill Creek?
For a fixed array facing south, the best year-round tilt in Mill Creek is 37°, worth about 1268 kWh per kWp a year. An off-grid system that has to get through December does better at about 69°.
What time is sunrise and sunset in Mill Creek today?
On 24 October 2026 the sun rises at 07:41 and sets at 18:03 local time (UTC−7), giving 10 h 22 min of daylight. Solar noon is at 12:52.
How many peak sun hours does Mill Creek get?
On a flat surface 3.5 hours a day averaged over the year, from 0.8 in December to 6.6 in July. Panels tilted at 70° receive 1.8 sun hours a day in December.
How high does the sun get in Mill Creek?
At solar noon the sun stands 65.6° above the horizon on the June solstice and 18.7° on the December solstice.
Is Mill Creek a good place for solar panels?
With 3.5 peak sun hours a day on flat ground, Mill Creek ranks joint 3069th of 3,121 places in the United States for sunshine. A 1 kWp array at the best angle (37°) makes about 1,268 kWh a year here, 16% less than the average place in the United States.

Places near Mill Creek

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Sun positions: NREL Solar Position Algorithm. Climate: NASA POWER monthly climatology (NASA Langley Research Center). Forecast: Deutscher Wetterdienst, ICON-EU (CC BY 4.0), processed. Places: GeoNames (CC BY 4.0). Time zones: IANA. Sources and licences.