Tuesday, October 14, 2025

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

TUESDAY, OCTOBER 14, 2025
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0556E
SUNSET:  1703E

LIGHT RAIN LINGERS AS COASTAL STORM DEPARTS….

This nor’easter has proven extremely beneficial in making up our
recent rainfall deficit, with the storm total since Sunday afternoon
now reaching 3.47″! Alongside the rain, yesterday’s peak gust of 51mph
broke the daily record, which was previously E46mph set back in 1950.

Due to flow remaining onshore so far today, light rain and fog continue.
Temperatures have held steady, slowly inching through the low 50s, which
remains below normal for the time of year.

Wind speeds are decreasing over time, with an average speed of 15mph,
primarily out of the north-northeast. The peak gust for today
occurred just after 2:30am, with a speed of approximately 35mph.

Visibility remains poor due to low clouds and fog, with views ranging
from one quarter to three quarters of a mile.

The maximum temperature so far today is 53F degrees, which is
9 degrees below the normal high of 62F. The minimum temperature
since midnight is 50F degrees, which is 5 degrees above the
normal low of 45F.

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Today’s Observations:

7 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain and fog
Temperature: 51F; Dew Point: 51F; Relative Humidity: 100%
Wind: NNE @ 11G21 kts, peak wind NNE 30mph at 6:21 A.M.
Sea-level pressure: 1018.9 mb; 30.09 in. Hg: falling, then rising
Visibility: 1/4 mile, fog
6-hr Max temp: 52F
6-hr Min temp: 51F
24-hr Precip: 1.47 inches
BHO SA 1155 X W2 1/4R-F 189/51/51/0211G21/009/ PK WND 0226/21/
8//// 53006 70147 10052 20051

10 A.M.
Weather: Sky obscured, vertical visibility 200ft, light rain and fog
Temperature: 51F; Dew Point: 51F; Relative Humidity: 100%
Wind: NNE @ 10G21 kts
Sea-level pressure: 1018.8 mb; 30.09 in. Hg: rising, then falling
Visibility: 1/2 mile, fog
3-hr Precip: 0.12 inches
BHO SA 1455 X W2 1/2R-F 188/51/51/0310G21/009/ 8//// 58001 6012/

1 P.M.
Weather: Sky obscured, vertical visibility 200ft, very light drizzle
Temperature: 53F Dew Point: 53F; Relative Humidity: 100%
Wind: NNE @ 9G20 kts
Sea-level pressure: 1017.8 mb; 30.06 in. Hg: falling unsteadily
Visibility: 3/4 mile, fog
6-hr Max temp: 53F
6-hr Min temp: 51F
6-hr Precip: 0.17 inches
BHO SA 1755 X W2 3/4L-F 178/53/53/0309G20/006/ PCPN VRY LGT/ 8////
57010 6017/ 10053 20051

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SUMMARY FOR MONDAY, OCTOBER 13, 2025

TEMPERATURE (DEGREES F)
MAX…….53   NORMAL…..62
MIN…….50   NORMAL…..45
MEAN……52   NORMAL…..54

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…………….-2
TOTAL DEPARTURE FOR THE MONTH………………………+41 [+3.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2025 THRU JUN 2026)
TOTAL HEATING UNITS FOR YESTERDAY…………….13  DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH…………….98  DEPARTURE…….-27
TOTAL HEATING UNITS FOR THE SEASON…………..161  DEPARTURE…….-81
TOTAL HEATING UNITS LAST SEASON TO DATE………173  DEPARTURE…….-12

COOLING DEGREE DAYS (SEASON JAN 2025 THRU DEC 2025)
TOTAL COOLING UNITS FOR YESTERDAY……………..0  DEPARTURE………0
TOTAL COOLING UNITS FOR THE MONTH…………….20  DEPARTURE…….+15
TOTAL COOLING UNITS FOR THE SEASON…………..756  DEPARTURE…….+80
TOTAL COOLING UNITS LAST SEASON TO DATE………757  DEPARTURE……..-1

PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all on Main Tower.
E=Estimated *=Last of multiple occurrences

F420C (Official)………..51 ENE  @   10:19 A.M.
VECTOR #1 (1-Sec)……….51 ENE  @   10:19 A.M.
VECTOR #2 (1-Sec)……….50 NE   @   08:41 A.M.
DAVIS #1……………….48 E    @   01:52 A.M.
DAVIS #2 ………………47 E    @   01:52 A.M.
RMY #1 (Instantaneous)…..51 ENE  @   06:28 A.M.
RMY #2 (Instantaneous)…..52 NE   @   02:39 A.M.
MERLIN…………………47 ENE
RICHARDS (C5C) (Inst)……47      @   08:41 A.M.

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………36 ENE  @   10:08 A.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..32      @   10:08 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..35      @   10:08 A.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………34 ENE  @   10:08 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………35 ENE  @   10:08 A.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..31 ENE  @   10:08 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..32 NE   @   10:08 A.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………31      @   10:08 A.M.

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..23.0 ENE [552 total miles] VECTOR #1………………20.7
VECTOR #2………………22.5
DAVIS #1……………….22.6 ENE
DAVIS #2……………….22.3 ENE
RMY #1…………………20.4 NE
RMY #2…………………21.5 NE
RICHARDS (C5C)………….20.8

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..1.47 DEPARTURE…..+1.30
TOTAL PRECIPITATION FOR THE MONTH…………..4.10 DEPARTURE…..+1.90
TOTAL PRECIPITATION FOR THE YEAR (2025)…….39.92 DEPARTURE…..-0.95

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PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY:  R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

10/1  61/49/55/-3/0.00/668/97            30 NE  VEC1 30 NE  RMY 30
10/2  60/43/52/-6/0.00/637/91            28 NE  VEC1 28 NE  RMY 28
10/3  72/46/59/+2/0.00/670/96            23 SW  VEC1 23 SW  RMY 23
10/4  81/53/67/+10/0.00/667/96           18 NNW VEC1 18 NW  RMY 19
10/5  84/62/73/+16/0.00/664/96           18 SSW VEC1 18 SSW RMY 18
10/6  83/59/71/+15/0.00/649/94           25 SSW VEC1 25 SSW RMY 26
10/7  79/59/69/+13/0.00/440/64           35 SSW VEC1 35 SSW RMY 36
10/8  68/49/59/+4/0.80/027/04            33 NW  VEC1 34 SSW RMY 35 TSTM
10/9  55/40/48/-7/0.00/…/..            33 NNW VEC1 35 NNW RMY 35
10/10 61/38/50/-5/0.00/…/..            25 SSW VEC1 26 S   RMY 26
10/11 66/49/58/+4/0.00/…/..            21 SW  VEC1 21 SW  RMY 20
10/12 56/52/54/0/0.91/…/..             50 ENE VEC1 50 ENE RMY 52
10/13 53/50/52/-2/…./…/..            51 ENE VEC1 51 ENE RMY 51

10/14 The low since midnight is 50F, the daily normal low is 45F.

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OCTOBER DAILY RECORDS TO DATE

10/5  HIGH MINIMUM TEMPERATURE OF 62F,
TIED THE RECORD FOR THE DATE WITH 1910

10/6  HIGH MAXIMUM TEMPERATURE OF 83F,
TIED THE RECORD FOR THE DATE WITH 1990 AND 2007

10/13 PEAK GUST OF 51 MPH ENE,
BEAT THE OLD RECORD OF 46e MPH W IN 1950

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DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)

RECORDS FOR OCTOBER 14
HIGH 79F IN 2000
LOW 28F IN 1958
PRECIP 2.69 INCHES IN 1990
SNOWFALL 2.0 INCHES IN 1913
PEAK GUST 63e W IN 1976

RECORDS FOR OCTOBER 15
HIGH 83F IN 1897
LOW 29F IN 1887,1937
PRECIP 4.58 INCHES IN 2005
SNOWFALL TRACE IN 1961,1972
PEAK GUST 69 MPH W IN 2003

TODAY’S REPORT PREPARED BY: Joshua Polen