1.3 usable nights
1–2 in the middle half of years · 0.7 typically near a dark moon.
351 astronomical-dark hours in an average month
20-year trip-planning baseline
Best time to stargaze at Logansport
August: 11.1 usable nights on average. Use this seasonal climate baseline to choose a month, then use the live forecast to choose a night.
Site darkness · modelled, not measured
Brightened skyBortle classes describe observed sky conditions; this brightness model does not establish a measured Bortle class.20.2–20.8 mag/arcsec²
The short answer
August has been strongest.
It averages 11.1 usable nights, versus 1.3 in January. A typical August lands between 9 and 13 usable nights.
Record2005–2024 · 20 complete years
Usable nightAt least 3 astronomical-dark hours and NASA POWER nighttime cloud ≤30%
Dark-moon nightUsable night with ≤25% illumination at local solar midnight
ResolutionCERES SYN1deg 1° cloud grid; regional climate, not a campsite guarantee
Seasonal fingerprint
Usable nights by month
Month by month
2.5 usable nights
1–3 in the middle half of years · 0.8 typically near a dark moon.
291 astronomical-dark hours in an average month
4.3 usable nights
3–4 in the middle half of years · 1.1 typically near a dark moon.
276 astronomical-dark hours in an average month
4.3 usable nights
2–6 in the middle half of years · 1.4 typically near a dark moon.
224 astronomical-dark hours in an average month
5.1 usable nights
4–6 in the middle half of years · 1.9 typically near a dark moon.
186 astronomical-dark hours in an average month
6.5 usable nights
3–8 in the middle half of years · 2.4 typically near a dark moon.
123 astronomical-dark hours in an average month
10.0 usable nights
9–11 in the middle half of years · 2.8 typically near a dark moon.
168 astronomical-dark hours in an average month
11.1 usable nights
9–13 in the middle half of years · 3.2 typically near a dark moon.
211 astronomical-dark hours in an average month
10.8 usable nights
9–12 in the middle half of years · 4.5 typically near a dark moon.
249 astronomical-dark hours in an average month
7.6 usable nights
5–9 in the middle half of years · 2.0 typically near a dark moon.
306 astronomical-dark hours in an average month
4.7 usable nights
2–7 in the middle half of years · 1.8 typically near a dark moon.
330 astronomical-dark hours in an average month
1.5 usable nights
1–2 in the middle half of years · 0.6 typically near a dark moon.
369 astronomical-dark hours in an average month
Use the baseline honestly
Climate chooses the month. Forecasts choose the night.
The cloud product is a roughly 1° regional grid. It can reveal seasonality, but it cannot know a mountain ridge, valley fog pocket, locked gate, smoke event or the exact sky you will get.
Source: NASA POWER daily data, parameter CLOUD_AMT_NIGHT from the CERES SYN1deg cloud product. GoodSeeing calculates astronomical darkness and lunar illumination independently for each place.