Frost Possible Throughout The Maritimes Overnight

11:19 PM ADT Saturday 23 May 2026

Impact Level: Moderate

Forecast Confidence: High

Frost is expected again tonight.

Minimum temperatures: +2 to -2 (coolest in low lying inland areas).

Time span: late tonight into early Sunday morning.

Take preventative measures to protect cold-sensitive plants, trees, and crops.

Frost advisories are issued when widespread frost or freezing temperatures are expected during the growing season.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NBstorm@ec.gc.ca or post reports on X using #NBStorm.

In effect for:

Fredericton and Southern York County

11:14 PM ADT Saturday 23 May 2026

Impact Level: Moderate

Forecast Confidence: High

Frost is expected again tonight.

Minimum temperatures: +4 to - 2  (coolest in low lying inland areas).

Time span: late tonight into early Sunday morning.

Damage to plants, trees, and crops is possible.

Frost advisories are issued when widespread frost or freezing temperatures are expected during the growing season.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to PEstorm@ec.gc.ca or post reports on X using #PEStorm.

11:13 PM ADT Saturday 23 May 2026

Impact Level: Moderate

Forecast Confidence: High

Frost is expected again tonight.

Minimum temperatures: +3 to -1  (coolest in low lying inland areas).

Time span: late tonight into early Sunday morning.

Take preventative measures to protect cold-sensitive plants, trees, and crops.

Frost advisories are issued when widespread frost or freezing temperatures are expected during the growing season.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NSstorm@ec.gc.ca or post reports on X using #NSStorm.

In effect for:

Halifax Metro and Halifax County West

A New Minimum Temperature Record Set In New Brunswick - 05/22/2026

Weather summary

for New Brunswick

issued by Environment Canada

at 9:11 a.m. ADT Saturday 23 May 2026.

Discussion.

The following area set a daily minimum temperature record on May 22, 

2026 (temperature values given in degrees Celsius): 

EDMUNDSTON AREA (Edmundston) 

New record of -4.5 

Old record of -3.5 set in 2007 

Records in this area have been kept since 1918 

Note: The temperature record reported here has been derived from a 

selection of historical stations in this geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

Frost & Freeze Possible Throughout Maine, New Brunswick And Nova Scotia Overnight

URGENT - WEATHER MESSAGE

National Weather Service Gray ME

245 PM EDT Thu May 21 2026

MEZ007-008-NHZ001-002-220645-

/O.CON.KGYX.FZ.W.0003.260522T0300Z-260522T1200Z/

Northern Oxford-Northern Franklin-Northern Coos-Southern Coos-

Including the cities of Davis, Phillips, Upton, Avon, Andover,

Lancaster, Coburn Gore, Colebrook, Oquossoc, Roxbury, Milan,

Kingfield, Wilsons Mills, Byron, Dummer, Errol, Millsfield,

Middle Dam, Rangeley, York Pond, South Arm, and Berlin

245 PM EDT Thu May 21 2026

...FREEZE WARNING REMAINS IN EFFECT FROM 11 PM THIS EVENING TO 8 AM

EDT FRIDAY...

* WHAT...Sub-freezing temperatures as low as 24 expected.

* WHERE...In Maine, Northern Franklin and Northern Oxford Counties.

  In New Hampshire, Northern Coos and Southern Coos Counties.

* WHEN...From 11 PM this evening to 8 AM EDT Friday.

* IMPACTS...Frost and freeze conditions could kill crops, other

  sensitive vegetation and possibly damage unprotected outdoor

  plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

URGENT - WEATHER MESSAGE

National Weather Service Caribou ME

108 PM EDT Thu May 21 2026

MEZ002-005-006-010-220815-

/O.CON.KCAR.FR.Y.0002.260522T0400Z-260522T1100Z/

Northeast Aroostook-Northern Penobscot-Southeast Aroostook-

Central Piscataquis-

Including the cities of Monson, Mars Hill, Millinocket, Ashland,

Houlton, Hodgdon, Greenville, Caribou, Medway, East Millinocket,

Patten, Sherman, Smyrna Mills, Van Buren, Presque Isle, and

Blanchard

108 PM EDT Thu May 21 2026

...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM

EDT FRIDAY...

* WHAT...Temperatures as low as 30 will result in frost formation.

* WHERE...Central Piscataquis, Northern Penobscot, Southeast

  Aroostook, and Northeast Aroostook Counties.

* WHEN...From midnight tonight to 7 AM EDT Friday.

* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive

  outdoor plants may be killed if left uncovered.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$

21

9:56 PM ADT Thursday 21 May 2026

Impact Level: Moderate

Forecast Confidence: High

Frost is expected tonight and possibly again on Friday night.

Minimum temperatures: +2 to zero (coolest in low-lying areas).

Time span: early Friday morning.  Possibly reforming Saturday night.

Remarks: Patchy frost is expected to form as clear skies and light winds coincide with cool temperatures, especially in low-lying areas.

Damage to plants, trees, and crops is possible.

Frost advisories are issued when widespread frost or freezing temperatures are expected during the growing season.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NBstorm@ec.gc.ca or post reports on X using #NBStorm.

In effect for:

Fredericton and Southern York County

9:52 PM ADT Thursday 21 May 2026

Impact Level: Moderate

Forecast Confidence: High

Frost is expected tonight and possibly again on Friday night.

Minimum temperatures: +4 to zero  (coolest in low-lying inland areas).

Time span: early Friday morning.  Possibly reforming Friday night.

Remarks: Patchy frost is expected to form as clear skies and light winds coincide with cool temperatures, especially in low-lying areas.

Damage to plants, trees, and crops is possible.

Frost advisories are issued when widespread frost or freezing temperatures are expected during the growing season.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to NSstorm@ec.gc.ca or post reports on X using #NSStorm.

In effect for:

Halifax Metro and Halifax County West

New Maximum Daily Temperature Records Set Throughout The Maritimes - 05/20/2026

Weather summary

for New Brunswick

issued by Environment Canada

at 3:23 a.m. ADT Thursday 21 May 2026.

Discussion.

The following areas set or tied a daily maximum temperature record 

on May 20, 2026 (temperature values given in degrees Celsius): 

DOAKTOWN AREA 

Tied record of 31.0 set in 2003 

Records in this area have been kept since 1952 

FREDERICTON AREA 

New record of 31.3 

Old record of 30.6 set in 1951 

Records in this area have been kept since 1871 

GRAND MANAN AREA 

New record of 29.5 

Old record of 24.9 set in 2003 

Records in this area have been kept since 1962 

KOUCHIBOUGUAC AREA 

New record of 31.2 

Old record of 30.3 set in 2003 

Records in this area have been kept since 1924 

MONCTON AREA 

New record of 31.4 

Old record of 28.9 set in 1931 

Records in this area have been kept since 1898 

SAINT JOHN AREA 

New record of 29.2 

Old record of 25.2 set in 2003 

Records in this area have been kept since 1871 

ST. STEPHEN AREA 

New record of 31.2 

Old record of 26.0 set in 2012 

Records in this area have been kept since 1951 

Note: the temperature records reported here have been derived from a 

selection of historical stations in each geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

Weather summary

for Nova Scotia

issued by Environment Canada

at 3:23 a.m. ADT Thursday 21 May 2026.

Discussion.

The following areas set a daily maximum temperature record on May 

20, 2026 (temperature values given in degrees Celsius): 

ANTIGONISH AREA 

New record of 30.2 

Old record of 29.4 set in 1931 

Records in this area have been kept since 1910 

CHETICAMP AREA 

New record of 26.9 

Old record of 24.6 set in 1999 

Records in this area have been kept since 1956 

GREENWOOD AREA 

New record of 31.3 

Old record of 26.7 set in 1975 

Records in this area have been kept since 1934 

HALIFAX (SHEARWATER) AREA 

New record of 28.4 

Old record of 25.6 set in 1918 

Records in this area have been kept since 1871 

HALIFAX AREA 

New record of 30.3 

Old record of 26.0 set in 2003 

Records in this area have been kept since 1953 

KEJIMKUJIK (NATIONAL PARK) AREA 

New record of 32.1 

Old record of 28.0 set in 2003 

Records in this area have been kept since 1966 

KENTVILLE AREA 

New record of 30.6 

Old record of 27.8 set in 1931 

Records in this area have been kept since 1898 

Note: the temperature records reported here have been derived from a 

selection of historical stations in each geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

Weather summary

for Prince Edward Island

issued by Environment Canada

at 3:24 a.m. ADT Thursday 21 May 2026.

Discussion.

The following areas set a daily maximum temperature record on May 

20, 2026 (temperature values given in degrees Celsius): 

CHARLOTTETOWN AREA 

New record of 28.0 

Old record of 25.6 set in 1918 

Records in this area have been kept since 1872 

ST. PETERS BAY AREA 

New record of 28.9 

Old record of 25.0 set in 1999 

Records in this area have been kept since 1960 

SUMMERSIDE AREA 

New record of 28.1 

Old record of 23.9 set in 2003 

Records in this area have been kept since 1898 

Note: the temperature records reported here have been derived from a 

selection of historical stations in each geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

New Daily Maximum Temperature Records Set In New Brunswick - 03/16/2026

Weather summary

for New Brunswick

issued by Environment Canada

at 5:39 p.m. ADT Tuesday 17 March 2026.

Discussion.

The following areas set or tied a daily maximum temperature record 

on March 16, 2026 (temperature values given in degrees Celsius): 

FUNDY (NATIONAL PARK) AREA (Fundy Park (Alma) CS) 

Tied record of 12.2 set in 2025 

Records in this area have been kept since 1950 

SAINT JOHN AREA (Saint John A) 

New record of 13.3 

Old record of 11.4 set in 2010 

Records in this area have been kept since 1871 

ST. STEPHEN AREA (St. Stephen) 

New record of 14.7 

Old record of 14.2 set in 2010 

Records in this area have been kept since 1951 

WOODSTOCK AREA (Woodstock Newbridge) 

New record of 13.6 

Old record of 13.5 set in 2010 

Records in this area have been kept since 1886 

Note: the temperature records reported here have been derived from a 

selection of historical stations in each geographic area that were 

active during the period of record.

Please note that this summary may contain preliminary or unofficial 

information and does not constitute a complete or final report.

End/ASPC

By Mid-March Ice Storm Part Two