Wednesday, April 29-Friday, May 1
Cloud cover will increase across the Valley today as a weak system brings areas of light rain, primarily to southern and coastal sections. Rain may extend as far north as central areas at times, though northern locations will see only isolated sprinkles. Any rainfall during the day will generally remain light, with totals under 1/4 inch. High temperatures will reach the mid to upper 50s with light south winds.
Tonight, mostly cloudy skies continue with additional light rain developing, especially across southwestern portions of the area. Some patchy fog may form overnight as lows fall into the lower 40s. The chance of precipitation ranges from about 40 to 50%.
On Thursday, conditions remain mostly cloudy with rain chances increasing through the day. Some uncertainty remains regarding how quickly steadier rain spreads east, but western areas are likely to see more persistent rainfall by afternoon, while eastern sections may not see steadier rain until later in the day. Highs will range from the lower to mid-50s with southeast winds between 5 and 10 miles per hour and gusts near 20 miles per hour. Rainfall during the day will generally be light, with totals under 1/10-inch, and precipitation chances rising to around 60 to 70%.
Thursday night will bring widespread steady rain along with patchy fog as a developing low pressure system approaches. Lows will remain in the lower 40s, and rainfall will become more substantial, with totals between 1/2 and 3/4-inch and near 100% precipitation chances.
Rain continues through Friday as the low-pressure system tracks north near the Maine and New Brunswick border, with the steadiest rainfall expected across eastern areas. Patchy fog may linger early, and highs will be in the upper 40s to around 50 degrees with light winds shifting during the day. The chance of precipitation will remain high, around 80 to 90%, with additional rainfall between 1/2 and 3/4-inch.
By Friday night, rain will gradually diminish from southwest to northeast as the system exits, leaving mostly cloudy skies and lows in the mid-30s. The chance of precipitation decreases to around 50 to 60%, with lighter additional rainfall amounts between 1/10 and 1/4-inch.
Saturday, May 2-Tuesday, May 5
A broad upper-level trough will deepen across Québec and the Northeast and remain in place through the weekend into early next week, supporting a prolonged stretch of seasonably cool and somewhat unsettled weather. Persistent west to northwest flow will keep daytime highs generally in the upper 40s to lower 50s, with cooler conditions across higher terrain. Overnight lows will range from the low to mid-30s. With colder air aloft and daytime heating, expect increasing cloud cover each day along with scattered afternoon showers, particularly over elevated areas. A more organized area of rain is expected to remain offshore on Sunday, limiting widespread impacts.
Through the weekend, Saturday will bring partly sunny skies with a chance of afternoon rain showers and highs in the upper 40s, along with precipitation chances around 30%. Saturday night will trend partly cloudy with lows in the upper 20s to lower 30s. On Sunday, partly sunny conditions continue with a chance of rain developing in the afternoon and highs again in the upper 40s, with precipitation chances increasing to around 40%. Sunday night will be mostly cloudy with a continued chance of evening rain and lows in the lower 30s.
Early next week, the unsettled pattern persists. Monday will feature partly sunny skies with a chance of afternoon showers and highs near 50, along with precipitation chances around 30%, followed by mostly cloudy skies Monday night and lows in the mid-30s. By Tuesday, an approaching cold front will increase the likelihood of more widespread showers, with highs in the lower 50s and precipitation chances rising to around 50%. Tuesday night will remain mostly cloudy with a continued chance of rain and lows in the upper 30s, with precipitation chances around 40%.
Daily Forecast
Today: Partly sunny, with highs in the upper 50s. South wind 6 to 10 mph, with gusts as high as 20 mph.
Tonight: A chance of rain, mainly after 2am. Mostly cloudy, with lows in the low to mid-40s. Southeast wind around 6 mph. Chance of precipitation is 40%.
Thursday: Rain likely, mainly after 4pm. Mostly cloudy, with highs in the mid-50s. Southeast wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night: Rain. Patchy fog. Lows in the low to mid-40s. East wind around 7 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday: Rain. Patchy fog before 9am. Highs in the upper 40s to around 50. East wind 6 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night: Rain likely, mainly before 7pm. Mostly cloudy, with lows in the mid-30s. Northeast wind around 6 mph becoming light and variable in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday: A chance of showers, mainly between noon and 5pm. Partly sunny, with highs in the upper 40s. Southwest wind 5 to 7 mph. Chance of precipitation is 30%.
Saturday Night: A slight chance of rain before 4am. Mostly cloudy, with lows in the low 30s. Chance of precipitation is 20%.
Sunday: A chance of rain, mainly after noon. Partly sunny, with highs in the upper 40s to around 50. Chance of precipitation is 30%.
Sunday Night: A chance of rain, mainly before 10pm. Mostly cloudy, with lows in the low to mid-30s. Chance of precipitation is 30%.
Monday: A chance of rain. Partly sunny, with highs in the low 50s. Chance of precipitation is 30%.
Monday Night: A chance of rain. Mostly cloudy, with lows in the mid-30s. Chance of precipitation is 30%.
Tuesday: A chance of rain. Partly sunny, with highs in the low to mid-50s. Chance of precipitation is 40%.
Tuesday Night: A chance of rain. Mostly cloudy, with lows in the upper 30s. Chance of rain 40%.
Weather Notice: The weekly forecast, by UMFK Professor Joseph E. Becker, is based on available computer models and data and may not reflect current conditions or later forecast updates. Check The County.me or the National Weather Service Caribou, Maine for the most recent weather information for the Saint John Valley.
