Winchester, VA
Best window: Monday 3:30 AM EDT-Mon, 5:30 AM EDT
Regional darkness proxy: 100%
Cloud cover
Forecast checked Sep 13
State overview · Conditions vary by location
Sunday night, September 13-14
Go
Conditions: 86 · Good
Moderate confidence forecastOne weather source (NWS); independent agreement unavailable, so confidence is capped at moderate.
Issued
Forecast expires
Next step: Inspect Bristol, VA for broad conditions, then verify an actual observing site's weather and access before leaving.
Current conditions for the selected Virginia forecast area look supportive during Sunday night, September 13-14, especially during Mon, 3:30 AM EDT-Mon, 6:00 AM EDT.
Forecast updated Sep 13
Single weather provider (NWS); independent agreement unavailable. Confidence is capped at medium. Confidence is medium.
Main limiter: No material limiter
Generated: Monday, Sep 14, 2026, 7:01 AM UTC
Regional forecast sample: Bristol, VA. This is a forecast area, not a ranked observing destination.
Score combines the supported cloud, Moon and darkness inputs available for this forecast scope.
Use the hourly view to see when conditions improve, weaken, or become too uncertain to support a plan.
Strongest supported comparison window
Mon, 3:30 AM EDT-Mon, 6:00 AM EDT
This is the strongest continuous interval among the supported options. Use each row's score to judge the quality of a specific hour.
Selected window is relative, not a claim that every included hour is favorable or uninterrupted clear sky.
| Time | Score | Clouds | Rain | Moon | Darkness | Confidence |
|---|---|---|---|---|---|---|
| 87 (selected window) | 22% | 1% | 0% | 100% | Moderate confidence forecast | |
| 87 (selected window) | 23% | 1% | 0% | 100% | Moderate confidence forecast | |
| 87 (selected window) | 23% | 1% | 0% | 100% | Moderate confidence forecast | |
| 86 (selected window) | 24% | 3% | 0% | 100% | Moderate confidence forecast | |
| 86 (selected window) | 24% | 3% | 0% | 100% | Moderate confidence forecast |
Mon 3:30 AM selected
Score 87 (Conditions: Good). Confidence: Moderate confidence forecast.
This hour belongs to the selected comparison window; its own score still controls whether the hour is favorable.
Clouds 22%
Precipitation 1%
Moon effect 0%
Darkness 100%
Scope: A conservative state summary copied from the highest eligible same-night forecast zone; it does not imply statewide coordinate precision.
Confidence: Moderate confidence forecast. Single weather provider (NWS); independent agreement unavailable. Confidence is capped at medium. Confidence is medium.
Main limiter: No supported factor materially limits this window.
Confidence describes evidence strength, not the probability that an observing session will succeed.
Broad planning samples, not ranked observing destinations
Virginia map
State map images are temporarily unavailable. Review the regional forecast samples below for their available details.
Best window: Monday 3:30 AM EDT-Mon, 5:30 AM EDT
Regional darkness proxy: 100%
Cloud cover
Best window: Monday 3:30 AM EDT-Mon, 5:30 AM EDT
Regional darkness proxy: 100%
No material limiter
Best window: Monday 3:30 AM EDT-Mon, 6:00 AM EDT
Regional darkness proxy: 100%
No material limiter
Longer-range state guidance
Seven-night planning is not available on this page. Missing nights are not estimated; recheck as each night enters the supported forecast window.
Practical reads before local execution