Extended Forecast | Significant/Hazardous Weather | Recreational Forecast | Detailed Discussion | Farm & Garden | Wind by Elevation | Temperature by Elevation
Detailed Forecast
Today:
Some valley fog early. Mostly sunny. Highs in the 70s, near 70 over the higher terrain north. Winds light and variable, becoming south near 10 mph west of the Green Mountains.
Tonight:
Mostly clear, with some clouds arriving late. Some areas of river valley fog. Lows in the upper 40s to mid 50s. Winds light east of the Green Mountains, and south to southwest 5 to 15 mph from the Green Mountains west.
Wednesday:
Areas of fog early, burning off to sunshine, mixed with clouds. A chance of a few showers in the afternoon. Highs in the 70s to near 80. Winds increasing from the south 10 to 15 mph, gusting to 25 mph.
Extended Forecast
Wednesday Night:
A localized evening shower, then partly cloudy. More clouds, and showers developing in NY after midnight, spreading through Quebec and VT. Lows in the 50s, a few 40s northeast. Winds becoming south 10 to 15 mph from the Green Mountains west, light east.
Thursday:
Occasional rain and showers spreading east. A chance of afternoon thunderstorms. Highs in the upper 60s to low 70s east and north of I-89, in the 70s west and south. Winds increasing from the south and southeast 10 to 15 mph, gusting 25 to 35 mph.
Thursday Night:
Rain and showers, possibly an evening thunderstorm, tapering off. Some partial clearing. Lows in the 50s.
Friday:
Juneteenth: Variable clouds and sun. A chance of a few showers north, mostly over the higher terrain. Highs in the 70s, a few upper 60s over the higher terrain north.
Friday Night:
Periods of clouds, with a few showers, mainly north. Lows in the upper 40s and 50s.
Saturday:
Becoming mostly cloudy, with a good chance of showers north. Periods of sun, a passing shower south. Highs in the 60s to near 70 north, in the 70s for the Champlain Valley and south.
Significant/Hazardous Weather
None through Wednesday.
Recreational Forecast
Mountain Forecast:
The summits are expecting lots of sunshine, light west to southwest winds, and temperatures moderating a few degrees. Wednesday calls for morning sun to mix with clouds, and a rising chance of afternoon showers. Light south winds will be increasing through the afternoon, with temperatures not changing. The outlook for Thursday brings clouds lower, obscuring the summits in rain and fog. Thunderstorms possible in the afternoon. Moderate to strong south winds becoming southeast, while temperatures area cooled a bit by the rain, and not much contrast through elevation.
Wind At Lower Elevations:
Winds today light, becoming south near 10 mph through the Champlain Valley, with waves on the open waters of Lake Champlain near 1 foot. Tonight, winds becoming light and variable, with waves on the open waters of Lake Champlain less than 1 foot. On Wednesday, winds increasing from the south 10 to 15 mph, with waves on the open waters of Lake Champlain building to 1 to 2 feet. The outlook for Thursday calls for winds increasing from the south 10 to 15 mph, gusting 25 to 35 mph.
For more details on Lake Champlain, go to: https://forecast.weather.gov/product.php?site=BTV&product=REC&issuedby=BTV
Detailed Discussion
Sunday night’s soaking was followed by a considerable change in the air, though the change was more dramatic in northern areas, with afternoon temperatures ranging from the low 60s to low 70s north to south, even some upper 50s in the Adirondacks, where clouds dominated the skies. Those clouds slowly eroded overnight, last through the northern Green and White Mountains, north into the Eastern Townships. The result is a fairly cool start to the day, a lot of 40s, along with channels of fog through the river valleys. The fog will thin easily, and the sun should take care of the rest, making for a very pleasant mid-June day, with most locations enjoying some refreshing 70s, low humidity, and light winds. That should set the scene for some fine views of the slender Crescent Moon just above Mercury, and right of Jupiter, while the brilliant Venus looks on from the upper left. The best views will run from 9:30 to quarter of 10. It also means another cool night, 40s and low 50s, as well as ribbons of valley fog along the rivers. This might be more true east of the Green Mountains, as some clouds begin to arrive late from the west, part of a minor, leading impulse that stirs up a few showers tomorrow afternoon and evening through NY, spreading into VT and Quebec, and perhaps northern NH, sliding east but dissipating overnight. However, this merely dampens the atmosphere, while a much more potent storm system sweeps periods of rain, showers, and possibly some thunderstorms through on Thursday. That storm is only a ripple in the atmosphere over the Canadian Rockies this morning. It dives into Montana late today, while strengthening, and gathering more moisture, pushing east with increasing rains through the upper Mississippi Valley tomorrow morning, and expanding east through the Great Lakes during the day. That sends it our way for Thursday, with the main core of the storm tracking east and northeast through the St. Lawrence Valley. This suggests a period of steadier rain overspreading the area Thursday morning, and then some unstable, energetic air Thursday afternoon, fueling more showery conditions, but ramping up some thunderstorms with some locally heavy rains. This bears watching as it develops, as the details could reveal enough rain to create some concerns for flooding or flash flooding Thursday afternoon into Thursday evening. As the storm matures, it slows and spins through central Quebec, initially drawing some drier air into its circulation Friday. Later in the day and into Friday night, more energy rotates around the storm, which means somewhat chaotic, changeable weather Saturday, and less so Sunday. Some clouds, some sun, some passing showers. Temperatures will run on the cool side, and you might just forget that the Summer Solstice occurs early on Sunday morning. This year’s arrival of calendar summer won’t offer anything like the steam heat of late last week.
Farm & Garden
Rainfall Forecast:
No rain through Wednesday morning. On Wednesday, showers developing west of the Green Mountains in the afternoon, covering 50 percent of western VT, up to 70 percent in NY, with amounts of 0.10 to 0.25 inches in NH, decreasing to 30 percent east late in the day, where amounts will be less than 0.10 inches. Showers and a few thunderstorms becoming likely west to east Thursday, tapering off Thursday night, covering 90 percent of the region, with amounts ranging from less than 0.50 inches near the MA border, increasing to 1.0 to 1.50 inches far north. A chance of a few showers Friday and Saturday, producing scattered, light amounts.
Drying Conditions:
Good to excellent drying conditions today, with minimum relative humidities near 35 percent. On Wednesday, good drying east with minimum relative humidities near 35 percent, becoming fair west of the Green Mountains, with a chance of a few showers, and minimum relative humidities near 50 percent. Showers likely Thursday, with poor drying conditions, as minimum relative humidities hold near 75 percent. Drying conditions improving to good Friday and Saturday, with a few localized showers.
Frost:
No frost expected for at least several days.
Wind by Elevation
| Elevation | Today | Wednesday | Thursday |
| 2000ft | W 5 to 15 mph | light>S 10 mph | SSE 30 to 40 mph |
| 4000ft | NW>SW 10 to 15 mph | S 10>15 mph | S 45>W 35 mph |
| 6000ft | NW 35>W 25 mph | S>SW 10 to 25 mph | S 60>W 70 mph |
Temperature by Elevation
| Elevation | Today | Wednesday | Thursday |
| 2000ft | 65 N/70 S | 67 N/74 S | 60s |
| 4000ft | 60 to 65 | 60 to 65 | near 60 |
| 6000ft | 40 to 45 | 40 to 45 | near 50 |