Heat Advisory HEAT ADVISORY - Middlesex County

Observed at
Lowell, Massachusetts
05-19-2026 11:40 PM

Temperature

72.9°F

Hour Change

-0.9°F

Wet Bulb Temp

70.7°F

Humidity

90%

Hour Change

2%

Dewpoint

69.8°F

Hour Change

-0.2°F

Wind

0 mph from N/A (N/A)

Wind Gust

1 mph

Barometer

29.88 inHg

3 Hour Trend

-0.01 inHg

Today's Rain

0.13 in

Current Rain Rate

0.00 in/hr

Last Hour of Rain

0.00 in

Apparent Temp

80.4°F

Wind Chill

72.9°F

Heat Index

74.1°F

Est. Cumulus Base

885 feet

Today's Highs / Lows

Temperature
Climate Normals

High: 70.8℉ ; Low: 45.9℉

High Temperature

Low Temperature

97.5°F at 01:30 PM

57.5°F at 03:39 AM

High Humidity

Low Humidity

91% at 06:52 AM

35% at 02:29 PM

High Dewpoint

Low Dewpoint

73.3°F at 04:46 PM

52.6°F at 03:08 AM

High Barometer

Low Barometer

30.07 inHg at 12:06 AM

29.81 inHg at 04:31 PM

High Wind Gust

16 mph from 243° at 03:26 PM

High Rain Rate

2.06 in/hr at 04:39 PM

Low Wind Chill

57.5°F at 03:39 AM

High Heat Index

102.2°F at 01:35 PM

Yesterday's Statistics

High Temperature

Low Temperature

78.7°F at 01:42 PM

58.7°F at 06:00 AM

High Humidity

Low Humidity

84% at 05:55 AM

38% at 11:49 AM

High Dewpoint

Low Dewpoint

55.2°F at 09:05 PM

47.2°F at 09:14 AM

High Barometer

Low Barometer

30.22 inHg at 09:26 AM

30.04 inHg at 07:12 PM

High Wind Gust

15 mph from 96° at 03:18 PM

Rain

0.00 in

High Rain Rate

0.00 in/hr at 12:00 AM

Low Wind Chill

58.7°F at 06:00 AM

High Heat Index

78.1°F at 01:42 PM

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*Regional Observations*




USA Extremes: Monday, May 18, 2026
(Lower 48)

High Temperature
102°F at Childress Municipal Ap, TX
102°F at Dryden Terrell County Ap, TX
102°F at Canadian, TX
102°F at Castroville Muni Tx, TX

Low Temperature
19°F at Berthoud Pass, CO
19°F at Mammoth Lakes Mammoth Yosemite Ap, CA
19°F at West Yellowstone, MT

High Precipatation
3.41in at Pella Municipal Airport, IA

Data courtesy of NWS-CPC



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Atmospheric CO2
Tonight

Tonight: Mostly Clear
Mostly Clear
Wednesday

Wednesday: Mostly Sunny then Chance Rain Showers
Mostly Sunny then Chance Rain Showers
Wednesday
Night
Wednesday Night: Mostly Cloudy
Mostly Cloudy
Thursday

Thursday: Partly Sunny
Partly Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Lo 70 °F Hi 91 °F Lo 53 °F Hi 68 °F Lo 46 °F





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Lowell Almanac Information
Station Elevation: 178 ft  Latitude: 42° 37' 33" N  Longitude: 71° 20' 12" W

Today's Almanac
Sun
Start civil twilight: 04:46:27 AM
Sunrise: 05:19:00 AM
Transit: 12:41:49 PM
Sunset: 08:05:14 PM
End civil twilight: 08:37:54 PM
Azimuth: 343.8°
Altitude: -25.8°
Right ascension: 56.9°
Declination: 20.0°
Solstice: 06/21/2026 04:24:30 AM
Equinox: 09/22/2026 08:05:13 PM
Moon
Rise: 07:29:57 AM
Transit: 03:45:33 PM
Set: 11:53:09 PM
Azimuth: 304.6°
Altitude: 1.4°
Right ascension: 107.2°
Declination: 25.5°
Full moon: 05/31/2026 04:45:12 AM
New moon: 06/14/2026 10:54:10 PM
Phase: Waxing crescent
(16% full)


Today's Total Daylight:  14 hours, 46 minutes, 14 seconds
1 minute, 55 seconds More than Yesterday

Lowell's Daily Climatology



Detailed Historical Data