Weekly Climate Summary for 21 June 2025 through 27 June 2025 UTC
South Pole Station, Antarctica

Temperature:
Average temp... -52.5°C / -62.5°F
Maximum temp... -40.7°C / -41.3°F on day 27
Minimum temp... -73.1°C / -99.6°F on day 21

Wind:
Average wind speed.......... 15.6 mph or 13.5 knots
Prevailing wind direction... Grid North
Maximum wind speed.......... 34 mph or 30 knots on day 22
Maximum wind direction...... Grid North
Average vectored wind....... 006 degrees at 12.2 knots

Station Pressure:
Average pressure... 685.6 mb
Highest pressure... 696.0 mb on day 24
Lowest pressure.... 671.8 mb on day 27

Physio-altitude:
Average physio-alt = 10418 ft/ 3175 m
Highest physio-alt = 10939 ft/ 3334 m on day 27
Lowest physio-alt  = 10030 ft/ 3057 m on day 24

Sky Cover:
Average cloud cover (8ths)... 6
Days clear................... 1
Days partly cloudy........... 3
Days cloudy.................. 3

Sunshine:
Sunrise on 20 September 2025
Average hours per day... 0.0
Percent of possible..... 0

Visibility:
1 day with visibility of 1/4 mile or less (6/23).

Balloon flight data:
Number of soundings for the week..... 7
Average height of soundings.......... 79.9 mb, or 17145 meters
Highest sounding..................... 6.7 mb, or 29198 meters on day 26/00Z flight

0 soundings were missed.

**RECORDS**
6/27: A maximum temperature of -40.7°C / -41.3°F breaks the previous daily record of -41.4°C / -42.5°F, set on this day in 1986.