McNair, Virginia Weather
McNair, Virginia — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, tide predictions, marine conditions and a solunar fishing forecast for McNair, Fairfax County.
Tides, marine forecast and fishing conditions near McNair. Tide source:
Full aviation weather for McNair is published on the Washington Dulles International Airport (KIAD) page, 4 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of McNair have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near McNair: Washington Manassas Harry P. Davis Field (KHEF) 27 km · Davison Army Air Field (KDAA) 33 km · Ronald Reagan Washington National Airport (KDCA) 34 km · Warrenton Fauquier Airport (KHWY) 48 km · Maryland Airport (K2W5) 49 km
Conditions reported at KIAD describe the airfield itself. Weather 4 km away can differ, particularly in terrain or near the coast. For conditions at McNair specifically, see the current conditions and forecast above.
About McNair, Virginia
McNair resides in a landscape sculpted by the gentle roll of the Piedmont, where the earth breathes a deep, earthy scent after a summer rain. It lies 3.9 miles south-south-east of Sterling, VA (from Sterling, VA: bearing 166°T), and is situated 7.7 miles north of Centreville. The terrain here is a study in subtle gradients, a place where the forest canopy, a rich, verdant tapestry of oak and maple, occasionally parts to reveal sun-drenched clearings. The air itself seems to hold a certain stillness, a quiet hum punctuated by the distant murmur of traffic or the sharp cry of a hawk circling overhead. Evenings in McNair often bring a particular kind of light, a soft, diffused glow that settles over the rooftops and lends a golden hue to the fading day. The history of McNair is intertwined with the broader narrative of Fairfax County, a region that has seen its share of transformation from agrarian roots to a nexus of modern commerce. While no specific grand estates or battlefields define its immediate landscape, McNair bears the imprint of suburban evolution, a place where former farmland has yielded to thoughtful development. Its economic character is largely defined by its proximity to larger employment centers, drawing residents who appreciate the quieter rhythm of life here while still benefiting from access to the wider metropolitan area. The local character of McNair is one of unassuming practicality, a community that values its green spaces and the uncomplicated beauty of its surroundings.
Live animated radar for McNair and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | McNair, Fairfax County, Virginia |
| Coordinates | 38.9513°N, 77.4115°W |
| Timezone | Eastern Time (America/New_York) |
| ZIP Code(s) | 20171 |
| Area Code | 571, 703 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This McNair, Virginia Weather Page
This page provides live weather conditions and forecasts for McNair, Virginia, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for McNair includes coordinates 38.951300°N, 77.411500°W, situated in Fairfax County. ZIP code 20171. Telephone area code: 571, 703. Timezone: Eastern Time (America/New_York).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
