4.2 usable nights
1–6 in the middle half of years · 1.4 typically near a dark moon.
358 astronomical-dark hours in an average month
20-year trip-planning baseline
Best time to stargaze at Fargo
August: 9.1 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
Bright skyBortle classes describe observed sky conditions; this brightness model does not establish a measured Bortle class.18.7–19.5 mag/arcsec²
The short answer
August has been strongest.
It averages 9.1 usable nights, versus 0.5 in June. A typical August lands between 7 and 11 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
5.0 usable nights
2–7 in the middle half of years · 1.8 typically near a dark moon.
292 astronomical-dark hours in an average month
3.3 usable nights
1–5 in the middle half of years · 0.7 typically near a dark moon.
266 astronomical-dark hours in an average month
5.0 usable nights
3–6 in the middle half of years · 1.3 typically near a dark moon.
199 astronomical-dark hours in an average month
6.9 usable nights
5–9 in the middle half of years · 2.5 typically near a dark moon.
136 astronomical-dark hours in an average month
0.5 usable nights
0–1 in the middle half of years · 0.2 typically near a dark moon.
62 astronomical-dark hours in an average month
7.2 usable nights
6–9 in the middle half of years · 2.2 typically near a dark moon.
105 astronomical-dark hours in an average month
9.1 usable nights
7–11 in the middle half of years · 3.0 typically near a dark moon.
176 astronomical-dark hours in an average month
9.1 usable nights
7–11 in the middle half of years · 3.0 typically near a dark moon.
242 astronomical-dark hours in an average month
5.7 usable nights
4–7 in the middle half of years · 1.9 typically near a dark moon.
302 astronomical-dark hours in an average month
2.8 usable nights
2–3 in the middle half of years · 1.1 typically near a dark moon.
335 astronomical-dark hours in an average month
3.0 usable nights
2–4 in the middle half of years · 0.8 typically near a dark moon.
372 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.