St Paul Island, AK

Alaska · Records since 1892–2026

☁️ 49°F Feels like 40°
Currently in St Paul Island
As of 10:30 AM
🔥 7° below today's record of 56°F

Records for September 11

🔥 Record High

56°F

September 11, 2018

+5° from 51° normal

❄ Record Low

29°F

September 11, 1992

-14° from 43° normal
🌞 Normal high: 51°F 🌑 Normal low: 43°F 1991–2020 normals

All-Time Records — St Paul Island

🔥
66°F
Hottest Day Ever
Aug 14, 2020
❄
-26°F
Coldest Day Ever
Jan 27, 1919
🌧
4.68"
Wettest Day Ever
Sep 5, 2025
☃
16.4"
Most Snow in One Day
Jan 9, 2002

First & Last Dates — St Paul Island

How early and how late each seasonal turning point has ever arrived, across the full period of record

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Range ever recorded Normal date (1991–2020)
170 days
Longest growing season
1926
10 days
Shortest growing season
1956
102 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 56°F September 11, 2018
2 56°F September 11, 2004
3 54°F September 11, 2019
4 54°F September 11, 2016
5 54°F September 11, 2014
6 54°F September 11, 1979
7 54°F September 11, 1977
8 53°F September 11, 1997
9 53°F September 11, 1993
10 53°F September 11, 1992

Top 5 Record Lows — September 11

# Temp Date
🥶 29°F September 11, 1992
2 30°F September 11, 1971
3 32°F September 11, 1991
4 33°F September 11, 1947
5 35°F September 11, 1951
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1892–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — St Paul Island

threshold: 54°F (90th percentile of historical Jun–Aug highs)
5.4
Avg heat wave length
days (historical)
58°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — St Paul Island

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 12, 2005 – Aug 17, 2005 37 61°F (Jul 24) 57°F 50°F
2 Jul 22, 2016 – Aug 22, 2016 32 60°F (Jul 27) 57°F 49°F
3 Aug 12, 2014 – Sep 5, 2014 25 60°F (Aug 15) 58°F 46°F
4 Aug 3, 2020 – Aug 23, 2020 21 66°F (Aug 14) 58°F 51°F
5 Jul 19, 2014 – Aug 6, 2014 19 63°F (Jul 31) 57°F 48°F
6 Jul 5, 2019 – Jul 19, 2019 15 64°F (Jul 7) 58°F 48°F
7 Aug 3, 2017 – Aug 14, 2017 12 60°F (Aug 6) 56°F 46°F
8 Jul 19, 2020 – Jul 29, 2020 11 62°F (Jul 24) 58°F 50°F
9 Jul 31, 1925 – Aug 10, 1925 11 61°F (Aug 3) 57°F 48°F
10 Aug 27, 2016 – Sep 6, 2016 11 59°F (Aug 29) 57°F 50°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

16
2026 total
above-normal nights
35.6
Avg / summer
1970–2020
87
Most in a summer
2005

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Annual totals and trend across the full period of record · see this year's standing →

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1892–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1892, annual totals have trended +0.35" per decade, about +4.6" across the record.

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

This Year — 2026

How St Paul Island is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

90 of 253 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

17.56"
2026 YTD
Normal: 13.78"
+3.78"
1.18"
September so far
September normal: 3.00"
-1.82"
1
2026 heavy rain days
Days with ≥ 1.0"

Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · St Paul Island is 3.78" ahead of the normal pace

Period Review — Sep 1 – Nov 30, 2026

Any window, evaluated against every other year on record — 91 days

Quick picks: Last 7 days Last 30 days Last 90 days This month
Seasons: Spring (Mar–May) Summer (Jun–Aug) Fall (Sep–Nov)
2026 is still under way for this window — totals and rankings appear once November 30 passes.

Average Temperature by Year — Sep 1 – Nov 30

1892–2025 · 2026 highlighted · trend +0.13° per decade (warming since 1892)

Precipitation by Year — Sep 1 – Nov 30

1915–2025 · 2026 highlighted · trend +0.09" per decade (wetter since 1915)

About this data. Pick any start and end date and this becomes the same kind of review as the Month and Fall tabs, just for exactly the window you asked for — the generalized version of the same engine, evaluated across every year on record. Average temperature is the mean of each day's (high + low) / 2; precipitation is the sum of daily totals. A year missing more than about a fifth of the window's days is excluded from the temperature ranking; any missing day excludes a year from the precipitation ranking, since an unreported day is unreported rain. Ranges that cross from December into January aren't supported yet. Normals are the 1991–2020 mean for the same window.
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