Saint John Weather Records🌤

Near record windchill. 5am windchill of -3.2 brought #Saint John within 0.7 of the lowest ever recorded on Sep 21st. #YsjWx

Streak over. After 12 consecutive September days with maximum temperature ≥19°C in #SaintJohn, the maximum temperature was only 18.0°C yesterday. We made it to 8th place, only 4 days behind the record. #YsjWx

Today between 8am➜9am, the temp jumped from 0.5°C➜9.5°C which was #SaintJohn's largest 1-hour jump since Nov 17th, 2023 #YsjWx

Today is #SaintJohn's first -1°C of the season. Typical first is October 2. Record earliest is Sep 4, 1949; latest Oct 28, 1961/2005. #YsjWx

Today is #SaintJohn's first #frost of the season. Typical first is September 27. Record earliest is Aug 28, 1947; latest Oct 23, 1968. #YsjWx

Streak over. After 10 consecutive September days with no precipitation in #SaintJohn, there was 0.3 mm of precipitation yesterday. We made it to 10th place, only 8 days behind the record. #YsjWx

Streak over. After 10 consecutive September days with no precipitation in #SaintJohn, there was ≥ a trace of precipitation today. We made it to 10th place, only 8 days behind the record. #YsjWx

Near record warmth. Monday's high of 23.5°C brought #Saint John within 0.9°C of the highest temperature ever recorded on Sep 15th. #YsjWx

Near record warmth. Today's ~4pm temp of 23.5°C brought #Saint John within 0.9°C of the highest temperature ever recorded on Sep 15th. #YsjWx

For only the 4th time in recorded history, #SaintJohn recorded a mean humidity below 74.5% during an August (August 2025). #YsjWx #YSJ #NBWx

#SaintJohn just had its driest meteorological summer since meteorological summer 2011. Mean Humidity was just 79.3%. #YsjWx

#SaintJohn just had its driest August since August 2010. Mean Humidity was just 74.4%. #YsjWx

Near record cold. A low of 1.9°C brought #Saint John within 0.9°C of the lowest ever recorded on on Sep 9th. #YsjWx

For only the 4th time in recorded history, #SaintJohn had less than 13mm of precipitation during an August (August 2025). #YsjWx #YSJ #NBWx

#SaintJohn just had its driest August since August 1996. Total precipitation was just 12.2 mm. #YsjWx

Historically, today is #SaintJohn's last day of the year with a median high temperature ≥ 20°C. #YsjWx

🥇For the 1st time in recorded history, #SaintJohn had less than 120mm of rain during a meteorological summer (meteorological summer 2025). #YsjWx

For only the 4th time in recorded history, #SaintJohn had less than 13mm of rain during an August (August 2025). #YsjWx #YSJ #NBWx

#SaintJohn just had its driest meteorological summer since records began. Total rain was just 118.6 mm. #YsjWx #YSJ #NBWx

#SaintJohn just had its driest August since August 1996. Total rain was just 12.2 mm. #YsjWx