The Northfield plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.
MILE1
TODAY
Today in Northfield
NWS forecast and National Blend of Models · updated 2:00 PM EDT
RIGHT NOWConcord Municipal Airport (KCON) · 3:11 PM
68°SunnyFeels like 68° · high of 67° near 3 PM
WindNW 6 mphno gusts
Humidity68%rising to 100% by morning
Pressure29.93 in →steady
Visibility10 mihaze-free
CloudsClear
UV index—no forecast
Dew point 57° · Comfortableabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Friday40% chance · showers
LIKELY AMOUNT—amounts come within 3 days
LAST RAINSept. 270.33 in · 2 dry days
ALERTS & OUTLOOKS
No watches or warnings for Merrimack County
NWS Gray and the Storm Prediction Center · checked 3:19 PM
SUN & MOON
↑ 6:41 AM6:31 PM ↓
11 h 50 m of daylight, 3 minutes less than yesterday
Waning gibbous, 89% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
13
GOODAir quality index · ozone
Tomorrow: None, good. No pollen source yet.
The next three days, hour by hour
Sky: clear, cloudy, nightRain likelyNational Blend of Models
Forecast, with the range 8 in 10 ensemble members agree onNormal, about 68° / 44°
TUESept. 29Mostly cloudy
67°50°
0% rain—NW 6A
WEDSept. 30Partly cloudy
74°52°
0% rain—WNW 0B
THUOct. 1Partly cloudy
80°61°
0% rain—SW 5A
FRIOct. 2Chance of showers
81°53°
40% rainup to 0.2″W 7C
SATOct. 3Mostly sunny; cooler
70°39°
10% rain—N 5C
SUNOct. 4Chance of showers
66°42°
40% rainup to 0.8″SE 5C
MONOct. 5Mostly sunny
65°35°
10% rain—NW 8C
How sure are we?AModels agree: highs within 4°BSome spread: within 8°CWide spread: check backRange from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL
Where today’s air came from
The air arriving over Northfield about 5,000 feet above the ground was over the North Atlantic three days ago, and over the western Atlantic a day ago, about 1,310 miles back along its path. Most of the nine paths traced from around the city agree. It rose from near the ground on the way. Near the ground the air came from Canada; at 10,000 feet, from the western Atlantic. Traced back 72 hours through NOAA’s hourly RAP analyses and the GFS beyond them, nine paths at each of three heights.