
March 1 to June 15 & Aug. 1 to Nov. 15
Apex Wx
Fort Kent &
the Saint John Valley, Maine
Weather Information
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📊 Fort Kent Weather Almanac(Click to Collapse/Expand)
2022
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☀️ Sun & Moon Information for Fort Kent, Maine 🌙
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September 20–26, 2026
Updated Sep.20 at 9:05 AM EDT
Overview:High
pressure that brought Saturday’s dry weather is shifting east into
the Maritimes today as a weak low-pressure system and cold front
approach northern Maine. Southerly flow ahead of the system will
increase clouds and moisture across the Saint John Valley. Most of
Sunday morning and early afternoon should remain dry, with showers
becoming more likely later in the day and especially during the
evening. Limited moisture and instability should keep rainfall
light and rule out any meaningful thunderstorm threat.
The cold front will move east Monday morning, although lingering
low clouds, patchy fog, or an isolated shower may persist early.
Cooler and drier northwest flow will then develop behind the
front, allowing clouds to gradually break while northwest winds
become somewhat breezy during the afternoon.
Canadian high pressure builds closer Monday night and settles
across the region Tuesday, bringing clearing skies, lighter winds,
and another stretch of dry weather. The combination of clear skies
and diminishing winds will also favor strong nighttime cooling,
with temperatures falling well into the 30s. Patchy frost may
develop in colder sheltered portions of the Valley Monday night,
with frost potential continuing Tuesday night.
Sunday: Clouds
will increase rapidly this morning, resulting in a mostly cloudy
day. Much of the morning and early afternoon should remain dry,
with showers becoming more likely later in the afternoon as the
approaching front draws closer. Highs should reach the upper 50s,
with southerly winds generally around 5–10 mph. Showers are most
likely Sunday evening and early Sunday night before gradually
diminishing toward morning. Rainfall should remain light,
generally around 0.10 inch or less. Lows will fall into the upper
30s, with patchy fog possible overnight.
Monday: A lingering shower or patchy fog may remain
possible early as the front moves east, but most of Monday should
be dry. Clouds will gradually break for some sunshine as cooler
and drier air arrives. Highs should reach the mid-50s. Northwest
winds increase during the day and may gust around 20 mph. Monday
night becomes mostly clear and chilly as high pressure builds
closer, with lows falling into the mid- to upper 30s. Patchy frost
may develop in colder sheltered areas.
Tuesday: High pressure will provide a sunny, dry, and
seasonably cool day. After another chilly start, temperatures
should recover into the upper 50s to near 60°F, with light
northerly winds. Tuesday night should remain mostly clear and
cold, with temperatures falling into the mid-30s. There is a
chance of frost where winds become calm and efficient nighttime
cooling develops.
Wednesday, September 23 – Saturday, September 26
Overview: Following the cool and dry weather
expected Tuesday, Canadian high pressure will remain the dominant
influence across northern Maine Wednesday and Thursday. Mostly
sunny skies, light winds, and a gradually moderating air mass
should allow daytime temperatures to climb from the lower 60s
Wednesday into the mid- to upper 60s Thursday. Clear skies and
light winds will still favor chilly nights, with temperatures
falling into the 30s and some frost possible in colder sheltered
locations.
Forecast confidence decreases Friday into Saturday as an
upper-level trough may evolve into a cut-off low near the Mid-Atlantic or
Northeast. Current model guidance agrees on the general
development of this feature but differs on its location, strength,
and evolution. Those details will determine how far north its
associated clouds and precipitation extend.
For now, current NWS guidance keeps the Saint John Valley mainly
dry through Saturday. Some increase in cloud cover is possible
late in the week, but significant rainfall is not indicated at
this time. Temperatures should remain relatively mild for late
September, generally reaching the mid-60s during the afternoon.
Wednesday: High pressure will provide a sunny
and dry day after a chilly start. Temperatures should reach the
lower to mid-60s, with light winds. Wednesday night will be clear
and cool, with lows in the mid-30s around Fort Kent and
potentially somewhat colder readings in sheltered locations.
Patchy frost may be possible where temperatures fall efficiently
after sunset.
Thursday: Sunshine continues as high pressure
remains dominant. Temperatures should moderate noticeably,
reaching the mid- to upper 60s, making Thursday the mildest day of
the period. Winds remain light. Thursday night should be mostly
clear to partly cloudy, with lows in the upper 30s to around 40°F.
Friday: The forecast becomes somewhat less
certain as the eastern U.S. trough and developing surface system
begin influencing New England. Current guidance nevertheless keeps
Fort Kent and the Saint John Valley predominantly dry, with partly
to mostly sunny skies and highs in the mid- to upper 60s. Clouds
may increase later in the day and Friday night, when lows should
fall into the upper 30s to lower 40s. Precipitation probabilities
remain low at this point.
Saturday: The position of the late-week system
will remain important in determining the northern extent of cloud
cover and any precipitation. Current guidance continues to favor
mainly dry conditions across northern Maine, with partly sunny
skies and highs generally in the mid-60s. Saturday night will be
partly cloudy and milder than earlier in the week, with lows in
the lower 40s.
The latest outlook favors above-normal temperatures and equal chances for precipitation across the Saint John Valley. Broad ridging centered over central Canada extends eastward enough to support the warmer tendency, while troughing near the East Coast contributes to a less certain precipitation pattern. Typical temperatures for the Valley during this period feature daytime highs in the upper 50s and overnight lows generally in the upper 30s.
🇺🇸 US National Weather Outlook(Click
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An active weather pattern will continue through Monday as a slow-moving front and upper-level disturbance cross the central and eastern United States. Repeated showers and thunderstorms could produce heavy rainfall and flash flooding Sunday from portions of the Rockies and Plains through the Midwest, Ohio Valley, and Mid-Atlantic. Flooding concerns will be greatest where recent rainfall has already saturated the ground.
Some thunderstorms may also become severe, producing damaging winds or hail from the central and southern Plains eastward into the Ohio Valley and Mid-Atlantic. On Monday, the front will move southeast, shifting the severe-storm threat toward the central and southern Appalachians and Southeast. Heavy downpours and localized flooding will remain possible, including across South Florida.
Hot and humid weather will persist across the central and southern Plains, Tennessee Valley, and lower Mississippi Valley, while cooler conditions spread into the northern Plains, Midwest, and Great Lakes.
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🌤️ Weather Resources
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🇺🇸 NOAA/National Weather Service Weather Information
NWS Caribou Weather
Information🌎 World Weather
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Weather Notice
Apex Wx forecasts are based on available observations, computer model guidance, and other meteorological data. Conditions and forecast guidance can change, and information displayed here may not reflect the latest official forecast or warning information. Always visit NWS Caribou for the latest official forecasts, watches, warnings, and advisories for northern Maine.
Apex Wx is a private weather information service unaffiliated with NOAA or the National Weather Service and operated by Joseph Becker, PhD. Dr. Becker earned a Certificate in Weather Forecasting from Penn State University and is a trained NWS SKYWARN Storm Spotter.
Credits
- Sun and Moon data from the U.S. Naval Observatory, with additional astronomical information from timeanddate.com.
- NOAA warning banner provided by WillyWeather.com.
- Through December 2026, additional archived Apex Wx weather data are available through the University of Utah's MesoWest.
- Current and archived Apex Wx weather data are available through Synoptic Data, the successor to MesoWest.
- Apex Wx logo by Joanna Becker © 2016. Visit Bushi and Brush Arts Dojo.
How accurate are forecasts?
Forecast confidence generally decreases as lead time increases. Forecasts for the next few days usually provide considerably more detail and confidence than forecasts a week or more in advance. Beyond about 7 days, forecasts are most useful for identifying broader weather patterns and temperature or precipitation trends rather than predicting exact conditions at a particular place and time.
Individual computer-model runs—especially those depicting specific storms, snowfall amounts, or other details a week or more in advance—should not be treated as forecasts by themselves. Extended forecasts will change as new observations become available and models better resolve the evolving atmospheric pattern. Check updated forecasts as the event approaches.
Weather Apps
Most weather apps rely heavily on automated forecast data. They can be useful for a quick look at routine weather, but automated forecasts may miss important local details or the significance of rapidly changing conditions. During hazardous or changing weather, consult weather.gov and other official National Weather Service information rather than relying solely on an app.
Radar Apps
Weather radar is an invaluable tool for tracking precipitation and storms, but radar images should not be interpreted as a real-time picture of conditions at the ground. Data collection, processing, transmission, mosaicking, and app updates can introduce delays, and radar detects energy returned from precipitation at varying heights above the surface. During rapidly developing or moving storms, conditions at your location may therefore differ from what a radar app appears to show. Use radar together with current observations and official National Weather Service warnings.
U.S. Satellite 🛰️
St. John River at Dickey






























![Click for larger image [CONUS Satellite Image]](https://weather.cod.edu/data/satellite/continental/conus/current/conus.truecolor.jpg)
















