506 FXUS61 KBTV 122333 AFDBTVArea Forecast Discussion National Weather Service Burlington VT 733 PM EDT Fri Sep 12 2025
.SYNOPSIS... Dry and seasonal conditions will persist this afternoon before an upper level disturbance brings increased cloud cover tomorrow and the chance for light rain showers Saturday night into Sunday. No significant precipitation is expected with any of these showers, so drought conditions will continue. Prolonged dry weather prevails for next week with temperatures warming above seasonal normals by mid- week.
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.NEAR TERM /THROUGH SATURDAY NIGHT/... As of 150 PM EDT Friday...It`s been a pleasant afternoon across the region this afternoon as surface high pressure continues to be the dominant weather feature, bringing mostly clear skies and seasonable temperatures. Skies will trend cloudier this evening as cloud cover associated with an approaching shortwave approach the region, with overnight lows dropping into the 40s to low 50s tonight. Some fog will be possible tonight, particularly across the Connecticut River Valley and portions of eastern Vermont where cloud cover will be slower to arrive.
The weak shortwave will continue to approach the region Saturday, with cloud cover through most of the day. Dry antecedent conditions will limit any precipitation chances, especially during the day when virga is more likely. The better chances for precipitation will be Saturday night into Sunday morning, although any showers will be hit or miss with negligible precipitation amounts expected given the overall lack of available moisture and the dry conditions overall. Some of the latest probabilistic guidance only shows a 25 percent chance or less for any locations to receive 0.1 inches of rainfall within a 24 hour period. Temperatures on Saturday look to be seasonable, with highs generally in the 70s and overnight lows in the upper 40s and 50s.
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.SHORT TERM /SUNDAY THROUGH SUNDAY NIGHT/... As of 150 PM EDT Friday...The shortwave will continue to exit the region on Sunday, with seasonable conditions expected. Some guidance supports a few lingering showers during the day Sunday, particularly across the higher terrain of the Green Mountains and Adirondacks, but otherwise most locations should remain dry as high pressure begins nosing into the region. Temperatures will continue to be seasonable warm to end the weekend, with highs climbing into the low to mid 70s for most of the area with overnight lows dropping back into the 40s and low 50s.
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.LONG TERM /MONDAY THROUGH FRIDAY/... As of 150 PM EDT Friday...Main story will be worsening drought conditions associated with high confidence in another string of sunny days with a warming trend Monday through Thursday. There is some uncertainty Thursday night into the weekend, however. Some scenarios depict a cold front with substantial moisture approaching the region towards Saturday; in contrast, most scenarios would result in continued dry conditions or an upper level system/trough with meager moisture eventually moving in from the northwest. Probabilities of measurable rain per the wetter scenario is 40-90% through Friday evening, while the overall probabilities are more like 35-50%; substantial rain is unlikely as fewer than 20% of ensemble members showing rainfall in excess of 0.1" anywhere in our region. A 10-15% chance of showers is noted Thursday night in the current forecast in northern portions of our region. These PoPs seem to be tied to a multi-model cluster with the northern stream feature swiping our region before exiting the east. If that occurs, there could be enough of a low level boundary to produce some light showers before winds turn northwesterly and we resume a dry weather pattern.
Daily occurrences of fog are likely, with highest confidence in widespread valley fog overnight Monday as high pressure builds in and low temperatures will greatly fall below crossover temperatures. Otherwise, no impactful weather is expected through the period. If it was still summertime, we`d probably have some marginal heat concerns in the Wednesday-Thursday timeframe. However, well above normal temperatures in mid September are not overly hot, as highs could approach daily record maximums in the middle 80s but are unlikely to exceed them.
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.AVIATION /00Z SATURDAY THROUGH WEDNESDAY/... Through 00Z Sunday...A couple of factors that will impact fog development and areal coverage tonight and they include lower surface dewpoints/drier air and development of mid level clouds from west to east. Have utilized tempo groups at SLK/EFK for intervals of MVFR condition with 3SM BR SCT002. For MPV have delayed fog development until 8/9Z with several hours of VLIFR possible around sunrise. Otherwise rest of our sites stay VFR with different layers of mid/upper lvl clouds, slowly lowering on Saturday as winds shift to the south at 4 to 8 knots.
Outlook...
Saturday Night: VFR. Chance SHRA. Sunday: VFR. Slight chance SHRA. Sunday Night: VFR. NO SIG WX. Monday: VFR. NO SIG WX. Monday Night: VFR. Patchy BR. Tuesday: VFR. Patchy BR. Tuesday Night: VFR. NO SIG WX. Wednesday: VFR. NO SIG WX.
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.BTV WATCHES/WARNINGS/ADVISORIES... VT...None. NY...None.
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$$ SYNOPSIS...Kremer NEAR TERM...Kremer SHORT TERM...Kremer LONG TERM...Kutikoff AVIATION...Taber
NWS BTV Office Area Forecast Discussion