Ohio · United States · 39.33° N · 82.98° W
Solar position in Chillicothe
Sun position, daylight and the best solar panel angle for Chillicothe — computed for 39.33° N, 82.98° W, 192 m above sea level.
The sun right now
Sun in Chillicothe today
Saturday, 24 October 2026 · local time UTC−4
| Event | Time | Direction / height |
|---|---|---|
| Astronomical dawn | 06:21 | sun 18° below horizon |
| Nautical dawn | 06:52 | 12° below |
| Civil dawn | 07:23 | 6° below |
| Sunrise | 07:51 | 105° ESE |
| Golden hour ends | 08:28 | sun 6° up |
| Solar noon | 13:15 | 38.8° high |
| Golden hour starts | 18:03 | sun 6° up |
| Sunset | 18:40 | 255° WSW |
| Civil dusk | 19:07 | 6° below |
| Nautical dusk | 19:39 | 12° below |
| Astronomical dusk | 20:10 | 18° below |
| Day length | 10 h 49 min | |
Sun path diagram for Chillicothe
Where the sun stands in the sky: the centre is straight overhead, the outer ring is the horizon. Numbers mark local clock hours.
- June solstice
- Equinox
- December solstice
- Today
On the June solstice the sun reaches 74.1° at solar noon in Chillicothe; on the December solstice only 27.3°. Sunrise swings from 58° ENE in June to 120° ESE in December — a 62° 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.
| Month | Sunrise | Solar noon | Sunset | Day length | Noon elevation |
|---|---|---|---|---|---|
| January | 07:47 | 12:43 | 17:39 | 9 h 53 min | 30.9° |
| February | 07:15 | 12:45 | 18:15 | 11 h 00 min | 40.3° |
| March | 07:33 | 13:39 | 19:45 | 12 h 11 min | 51.1° |
| April | 06:46 | 13:30 | 20:15 | 13 h 29 min | 62.7° |
| May | 06:13 | 13:28 | 20:44 | 14 h 31 min | 71.0° |
| June | 06:05 | 13:33 | 21:02 | 14 h 57 min | 74.1° |
| July | 06:22 | 13:38 | 20:53 | 14 h 31 min | 71.0° |
| August | 06:50 | 13:34 | 20:18 | 13 h 29 min | 62.6° |
| September | 07:18 | 13:24 | 19:30 | 12 h 12 min | 51.2° |
| October | 07:48 | 13:16 | 18:44 | 10 h 56 min | 39.8° |
| November | 07:22 | 12:17 | 17:13 | 9 h 51 min | 30.7° |
| December | 07:48 | 12:30 | 17:11 | 9 h 24 min | 27.3° |
A year of daylight in Chillicothe
Each column is one day of 2026. Bright: sun above the horizon; soft: civil twilight; line: solar noon. Steps are daylight saving time changes.
Best solar panel angle in Chillicothe
Fixed array facing south (azimuth 180°). Energy per kWp from NASA POWER monthly climate, including clouds, temperature and snow reflection.
32°collects the most energy over a year: 1361 kWh per kWp.
61°gives the most in the darkest month — the one an off-grid system is sized for.
- Yearly energy
- Worst-month energy
| Tilt | kWh/kWp per year | Share of best year | December kWh/kWp/day | Best ÷ worst month |
|---|---|---|---|---|
| 0° | 1184 | 87% | 1.24 | 4.0× |
| 15° | 1309 | 96% | 1.68 | 3.0× |
| 30° | 1360 | 100% | 2.03 | 2.3× |
| 32° year-round best | 1361 | 100% | 2.06 | 2.3× |
| 39° = latitude | 1354 | 99% | 2.18 | 2.0× |
| 45° | 1335 | 98% | 2.25 | 1.9× |
| 60° | 1235 | 91% | 2.33 | 1.7× |
| 61° off-grid best | 1226 | 90% | 2.33 | 1.7× |
| 70° | 1130 | 83% | 2.31 | 1.6× |
| 90° | 850 | 62% | 2.08 | 1.7× |
A fixed array in Chillicothe produces the most over a year at 32°. The design month for an off-grid system is December: at 61° it makes 2.33 kWh per kWp a day, 13% more than at 32°, and costs 10% of the yearly total. Why steep panels win winter.
Off-grid solar in Chillicothe at 70°
Daily energy of 1 kWp by month. Bars: panels at 70°. Line: panels at 32° (year-round best).
| Month | Sun hours, flat | Sun hours at 70° | kWh/kWp/day at 70° | at 32° | Mean temp. |
|---|---|---|---|---|---|
| January snow | 1.77 | 2.87 | 2.60 | 2.33 | -1.6 °C |
| February snow | 2.54 | 3.44 | 3.11 | 3.02 | -0.4 °C |
| March | 3.60 | 3.74 | 3.30 | 3.73 | 5.0 °C |
| April | 4.89 | 3.90 | 3.36 | 4.41 | 11.6 °C |
| May | 5.53 | 3.56 | 2.99 | 4.45 | 17.2 °C |
| June | 6.16 | 3.51 | 2.89 | 4.66 | 21.7 °C |
| July | 5.97 | 3.58 | 2.92 | 4.56 | 24.1 °C |
| August | 5.51 | 3.99 | 3.27 | 4.56 | 23.8 °C |
| September | 4.56 | 4.39 | 3.67 | 4.35 | 20.0 °C |
| October | 3.19 | 4.07 | 3.50 | 3.60 | 12.8 °C |
| November | 2.25 | 3.69 | 3.26 | 2.98 | 5.9 °C |
| December | 1.52 | 2.58 | 2.31 | 2.06 | 0.8 °C |
| Year | 3.96 avg | 3.61 avg | 1130 kWh | 1361 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 510 Wp of panels at 70°, versus 570 Wp at 32°. The steep array is 11% smaller for the same winter. Size your own system.
Row spacing in Chillicothe
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.
4.9 mrow pitch at 70°
4.1 mrow pitch at 32°
How Chillicothe 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.
2024thof 3,121 places in the United States for sunshine, shared: 3.96 peak sun hours a day on flat ground.
−10%solar energy a year compared with the average place in the United States: 1,361 against 1,515 kWh per kWp.
−9 mindaylight on the longest day, compared with New York City: 14 h 57 min against 15 h 06 min.
32°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); Chillicothe ranks joint 2024th. In its darkest month, December, 1 kWp of off-grid panels at 70° makes 2.31 kWh a day here, against 2.55 kWh on average in the United States. The shortest day lasts 9 h 24 min, +8 min compared with New York City.
Solar forecast for Chillicothe, next 48 hours
Expected output of 1 kWp at 70°, computed from the ICON-EU weather model of the Deutscher Wetterdienst (DWD), Europe.
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Questions about the sun in Chillicothe
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A free, live card for Chillicothe: where the sun is right now on today's path, a countdown to sunset or sunrise, the daylight change, the moon phase at night and the best panel angle.
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.