Weekly Climate Summary for 13 September 2025 through 19 September 2025 UTC
South Pole Station, Antarctica

Temperature:
Average temp... -56.5°C / -69.7°F
Maximum temp... -49.2°C / -56.6°F on day 16
Minimum temp... -71.5°C / -96.7°F on day 13

Wind:
Average wind speed.......... 12.7 mph or 11.0 knots
Prevailing wind direction... Grid North
Maximum wind speed.......... 24 mph or 21 knots on day 19
Maximum wind direction...... Grid North
Average vectored wind....... 030 degrees at 10.1 knots

Station Pressure:
Average pressure... 675.4 mb
Highest pressure... 681.4 mb on day 19
Lowest pressure.... 671.3 mb on day 16

Physio-altitude:
Average physio-alt = 10802 ft/ 3292 m
Highest physio-alt = 10958 ft/ 3340 m on day 16
Lowest physio-alt  = 10575 ft/ 3223 m on day 19

Sky Cover:
Average cloud cover (8ths)... 5
Days clear................... 0
Days partly cloudy........... 6
Days cloudy.................. 1

Sunshine:
Sunset on 22 March 2026
Average hours per day... 0.0
Percent of possible..... 0

Visibility:
0 days with visibility of 1/4 mile or less.

Balloon flight data:
Number of soundings for the week..... 7
Average height of soundings.......... 89.1 mb, or 18108 meters
Highest sounding..................... 7.3 mb, or 30507 meters on day 18/06Z flight

1 sounding was missed.

**RECORDS**
No records were tied or broken this week.

*Sunrise observed at 1508 UTC on 20 September 2025.