Boston/Logan Intl
Weather station · 42.4°N 71.0°W · 4 m above sea level
ICAO KBOSWMO 72509Station data since 1936
Record high
33.3°C
in 1970
Record low
4.4°C
in 1947
Average high
21.2°C
all years on record
18.9°C short of the record for 23 September
Today’s high 14.4°C against 33.3°C in 1970. A reading that beats it is flagged here automatically, once a second cycle confirms it.
All-time record high
39.4°C
- Date
- Friday, 22 July 2011
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Boston/Logan Intl, United States
- Position
- 42.36°N 71.01°W · 4 m
Highest highest in available records since 1936. Source: NOAA GHCN-Daily.
All-time record low
−25.6°C
- Date
- Monday, 15 February 1943
- Time of day
- Not recorded. The daily archive stores the day, not the hour.
- Location
- Boston/Logan Intl, United States
- Position
- 42.36°N 71.01°W · 4 m
Highest and lowest lowest in available records since 1936. Source: NOAA GHCN-Daily.
Where Boston/Logan Intl is
42.36°N 71.01°W
Boston/Logan Intl
Ground · satellite
Land surface temperature for 2026-09-22, from NASA GIBS. This is the temperature of the ground seen from orbit, not the air, and it is never ranked against air readings. Cloud hides the ground, so gaps are unread rather than guessed.
View more on Google Maps- 1
Boston/Logan Intl has dropped below freezing on 7973 nights since 1936. The desert remembers every one of them.
From our dataNights with a minimum below 0°C since 1936. - 2
Today is colder than 53% of all days recorded here since 1936.
From our dataToday's high against every day recorded at this station since 1936. - 3
Right now Davis Lgb 46 Aws is 83.6°C colder than Boston/Logan Intl. Same planet. Same afternoon.
From our dataBoth readings are live and ranked on this site now. - 4
The coldest night Boston/Logan Intl has ever recorded, −25.6°C, would pass for a warm spell at Davis Lgb 46 Aws, which is −69.2°C right now.
From our dataThis station's record low against the current live reading at Davis Lgb 46 Aws.
New facts every day. Report an error.
Every year on record
1936 to 2026
Annual average · °C
Trend over 90 years with data: +0.10 °C per decade
Source: NOAA GHCN-Daily. Years the station did not cover are left as gaps, never joined across. The dashed line is a least squares trend through the years that have data.
Records by month
Jan
23.3°
−24.4°
Feb
22.8°
−25.6°
Mar
31.7°
−17.2°
Apr
34.4°
−8.9°
May
35.6°
1.1°
Jun
38.9°
5.0°
Jul
39.4°
10.0°
Aug
38.9°
7.8°
Sep
37.8°
Recent days
| Day | High | At | Low | At |
|---|---|---|---|---|
| 2026-09-23 | 14.4°C | 00:54 UTC | 10.6°C | 06:54 UTC |
| 2026-09-22 | 16.7°C | 14:54 UTC | 14.4°C | 22:54 UTC |
Nearby stations
Data sources for this page
| Figure | Source | Type |
|---|---|---|
| Right now, today so far | NOAA Aviation Weather Center (METAR) and NOAA NWS WMO bulletins (SYNOP) | Measured, station |
| All-time, monthly and on-this-day records | NOAA NCEI Global Historical Climatology Network daily (GHCN-Daily), 1936 to 2026 | Measured, station |
| Nearby stations and distances | Computed from station positions in our own database | Calculated |