Apex Wx

Fort Kent & the Saint John Valley, Maine
Weather Information

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Cooler and drier weather will settle across the Saint John Valley on Saturday as high pressure builds behind Friday’s cold front. Sunny skies, lower humidity, and seasonable temperatures should make Saturday the most favorable day of the period. Afternoon temperatures will reach the low 70s, with light west winds increasing to 5 to 10 mph. Mostly clear skies Saturday night will allow temperatures to fall into the mid- to upper 40s.

High pressure will begin shifting east on Sunday as another disturbance approaches from the west. Much of the day should remain dry and mostly sunny, with afternoon temperatures in the low to mid 70s. Clouds will gradually increase, with a few showers possible before showers and thunderstorms become more likely after mid-afternoon. Coverage should increase Sunday night as the disturbance moves closer, with showers becoming likely later at night. Overnight temperatures will fall into the low 50s.

The weather will remain somewhat unsettled on Monday as the disturbance moves through the region. A few showers will remain possible, but considerable dry weather is also expected, with partly sunny skies and afternoon temperatures in the low 70s. Shower chances will diminish Monday night as temperatures fall into the upper 40s.

Another weak upper-level disturbance may bring scattered showers on Tuesday, although the day does not currently appear to be a washout. Otherwise, skies should be partly to mostly sunny with temperatures around 70 degrees. Clouds will increase again Tuesday night, with a continued chance of showers and temperatures settling around 50 degrees.

Overall, Saturday offers the best weather of the period, while Sunday begins favorably before becoming more unsettled later in the day and at night. Monday and Tuesday will feature occasional shower chances, but extended periods of dry weather are also expected.
Climate Prediction Center outlooks favor above-normal temperatures and precipitation across the Saint John Valley. Large-scale atmospheric patterns favor a generally mild but active early-September pattern, with occasional weather systems and frontal passages bringing opportunities for rainfall. Brief periods of cooler weather remain possible behind passing cold fronts even as temperatures average above normal overall. Normal temperatures during this period are in the upper 60s to around 70 for highs and upper 40s for lows.