New England Weather Discussion

(With thanks to the surrounding National Weather Service Offices)

Current Weather Readings:

(FYI: The number in parenthesis below is the change in the last hour)

• Time of the readings below: 2 Apr 2025 6:27 PM

• Current Temperature: 44.0°F (-0.8)

• High Temperature for today: 45.0 at 4:41 PM.

• Low Temperature for Today: 26.8 at 7:15 AM.

• Rainfall Today: 0.00 inches

• Current Dewpoint Temperature: 17.5°F (0.7)

• Hours of Daylight Tomorrow: 12:49

• Lowest Windchill Reading Today: 23.6 at 6:36 AM 

  Find ALL of my instrument readings here

  Last Complete Site Update: 4/02 - 4:34 PM

  

  Snowfall Accumulation Estimates for Tonight

  Rich`s Weather Discussion

  It was a seasobaly cool day here in the Monadnocks with clouds on the increase. 
  Snow/sleet/freezing rain/rain tonight eventually turns to rain here in Southern NH by Thursday morning. Farther north, the change over will take longer. There may be light accumulations here in Southern NH. Expect some slippery conditions for the Thursday commute.
  A Winter Weather Advisory is active in most of NH & Maine.
  This all ends by Thursday evening with a dry Friday ahead.
  The weekend is looking wet once again.
  Stay tuned.
  
  On this day In 1917, President Woodrow Wilson requested that Congress send U.S. troops into battle against Germany during World War I. Four days later, Congress complied and declared war on Germany.
  

  NEAR TERM, THROUGH TONIGHT
  
  Tonight, a low-pressure system moves east, bringing some precipitation into the region. An isothermic environment, where temperatures remain nearly uniform with height, will allow most precipitation to begin as snow. Overnight, southerly winds near the surface will disrupt this uniform layer, leading to a gradual changeover to sleet and freezing rain.
  
  SHORT TERM, THURSDAY
  
  Tomorrow morning, interior areas are most likely to see a mix of precipitation during the morning commute. However, this mix will transition to rain from south to north. Once the change to rain occurs, temperatures will likely rise as warmer air moves down to the surface in the afternoon. High temperatures are expected to reach the upper 50s and 60s in the Connecticut River Valley and southern New Hampshire, while Maine and other areas will see highs in the mid-40s.
  
  LONG TERM, THURSDAY NIGHT THROUGH WEDNESDAY
  
  Overview: High pressure will build in on Friday, bringing fair weather. Afterward, an active weather pattern develops as waves of low pressure move along a frontal boundary that slowly shifts south early next week. The first system will bring widespread wintry precipitation from late Saturday into Sunday. Temperature profiles indicate snow and a wintry mix across interior areas Saturday night, followed by a transition to rain from southwest to northeast Sunday morning. There may be a break in precipitation Sunday afternoon before another low-pressure system moves through southern New England Sunday night. Precipitation chances decrease on Monday, but longer-range forecasts suggest additional systems could impact the region toward the middle of next week as a trough approaches the Northeast.
  
  Impacts: Snow and a wintry mix could create slick travel conditions in northern areas from late Saturday through Saturday night.
  
  Details: Drier air will move into the region Thursday night into Friday on northwest winds. A northwest pressure gradient will remain in place Friday as high pressure builds from the west, with wind gusts reaching up to 25 mph. Skies will turn mostly sunny by Friday afternoon, with highs ranging from the mid-40s in northern areas to the mid-60s across southern New Hampshire. High pressure will settle over the region Friday night, allowing temperatures to drop into the low 20s in the north and low 30s in the south.
  
  A low-pressure system will move from the Ohio Valley toward the St. Lawrence Valley late Saturday into Sunday, spreading precipitation into the region by Saturday afternoon. Dry air in place will cause wet bulbing, a process where evaporation cools the air, leading to precipitation starting as snow in the north and a mix of rain and snow south of the mountains. As warmer air moves in Saturday night, precipitation will change to a wintry mix in the north and rain in the south by Sunday morning. By daybreak Sunday, temperatures will rise above freezing across all areas, with rain becoming the dominant precipitation type. Rain will taper off Sunday afternoon before another low-pressure system approaches Sunday night.
  
  The next system will bring rain south of the mountains and a mix of rain and snow across the north from Sunday night into Monday. Colder air moving in Monday night could allow for snow showers south of the mountains.
  
  

  Forcaster`s Discussion
  

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  Regional Synopsis

  New Hampshire and Maine

  SYNOPSIS... A warm front will lift into New England tonight bringing a period of snow to a wintry mix that will change to rain Thursday. High pressure builds in Friday for fair weather. Low pressure tracking into the St Lawrence Valley will bring another round of wintry precipitation changing to rain late Saturday into Sunday. Additional waves of low pressure will track along a frontal boundary that will be near southern New England early next week.
  

  Massachusetts

  SYNOPSIS... An approaching warm front will bring a period of light rain tonight into Thursday morning, with pockets of mixed wintry precipitation possible across northern MA tonight. Milder conditions arrive Thursday into Friday, with a stalled front possibly bringing a few showers near the south coast Thursday night into early Friday. Unsettled conditions continue this weekend, as a frontal system impacts the region, with cooler temperatures Saturday followed by milder conditions Sunday. Saturday appears to be the wetter of the two days. Drying out Monday, as the frontal system exits the region, along with cooler than normal temperatures overspreading the area much of next week.
  
  NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
  
  Key Messages:
  
  * Periods of rain developing tonight
  
  * Pockets of mixed wintry precip across the interior with spotty freezing rain possible over the higher elevations. Any travel impacts will be limited.
  
  SHORT TERM /6 AM THURSDAY MORNING THROUGH FRIDAY/...
  
  Key Messages:
  
  * Milder Thu with rain becoming more spotty in the afternoon
  
  LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
  
  Updated 2:50 PM
  
  Key Messages
  
  * Pleasant early spring day Friday afternoon
  
  * Cooler on Saturday followed by increasing shower chances Saturday afternoon & night, then warmer and not as wet Sunday
  
  * Trending drier, but cooler next week
  

See the current readings from my weather instruments here in Peterborough, NH by clicking on the Weather Vane Below.

Weather History for Today