Mcgrath, AK

Alaska · Records since 1941–2026

☁️ 48°F Feels like 42°
Currently in Mcgrath
As of 10:30 AM AKDT

Records for September 11

🔥 Record High

72°F

September 11, 1979

+16° from 56° normal

❄ Record Low

26°F

September 11, 2012

-14° from 40° normal
🌞 Normal high: 56°F 🌑 Normal low: 40°F 1991–2020 normals

All-Time Records — Mcgrath

🔥
94°F
Hottest Day Ever
Jun 17, 2013
❄
-75°F
Coldest Day Ever
Jan 27, 1989
🌧
1.73"
Wettest Day Ever
Sep 21, 2000
☃
16.2"
Most Snow in One Day
Jan 3, 2005

First & Last Dates — Mcgrath

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)
140 days
Longest growing season
2017
52 days
Shortest growing season
2003
109 days
Normal growing season
1991–2020 average

Top 10 Record Highs — September 11

# Temp Date
🏆 72°F September 11, 1979
2 71°F September 11, 2010
3 70°F September 11, 2018
4 67°F September 11, 2006
5 67°F September 11, 1964
6 66°F September 11, 2007
7 66°F September 11, 1999
8 64°F September 11, 2009
9 64°F September 11, 1974
10 64°F September 11, 1968

Top 5 Record Lows — September 11

# Temp Date
🥶 26°F September 11, 2012
2 26°F September 11, 1959
3 27°F September 11, 1990
4 28°F September 11, 1962
5 28°F September 11, 1948
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 1941–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Mcgrath

threshold: 77°F (90th percentile of historical Jun–Aug highs)
4.7
Avg heat wave length
days (historical)
84°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
0
Heat waves 2026
so far

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Mcgrath

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jun 22, 1997 – Jul 7, 1997 16 86°F (Jul 4) 82°F 54°F
2 Jun 14, 2015 – Jun 25, 2015 12 87°F (Jun 19) 82°F 52°F
3 Jun 3, 1957 – Jun 12, 1957 10 88°F (Jun 6) 84°F 53°F
4 Jul 4, 2019 – Jul 12, 2019 9 89°F (Jul 8) 84°F 56°F
5 Jun 12, 2013 – Jun 19, 2013 8 94°F (Jun 17) 84°F 50°F
6 Jul 23, 1953 – Jul 30, 1953 8 87°F (Jul 25) 83°F 53°F
7 Jul 13, 1988 – Jul 20, 1988 8 85°F (Jul 15) 81°F 54°F
8 Jul 16, 1990 – Jul 23, 1990 8 83°F (Jul 20) 80°F 51°F
9 Jun 16, 2001 – Jun 23, 2001 8 83°F (Jun 22) 80°F 51°F
10 May 29, 1993 – Jun 5, 1993 8 80°F (Jun 2) 78°F 46°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

23
2026 total
above-normal nights
31.3
Avg / summer
1970–2020
66
Most in a summer
2016

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 (1939–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1939, annual totals have trended +0.07" per decade, about +0.6" 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 Mcgrath is tracking against normal, year to date

Daily High Temperature vs Normal

Above normal Below normal

74 of 250 days with data were above the 1991–2020 normal high for their date.

Precipitation, Year to Date

20.01"
2026 YTD
Normal: 12.31"
+7.70"
1.67"
September so far
September normal: 2.53"
-0.86"
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 · Mcgrath is 7.70" ahead of the normal pace

Period Review — Jun 12 – Sep 10, 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)
55.9°F
Average temperature
38th-coolest of 85
-1.3°
vs. average
Normal: 57.3°F (1991–2020)

Average Temperature by Year — Jun 12 – Sep 10

1941–2026 · 2026 highlighted · trend +0.36° per decade (warming since 1941)

Precipitation by Year — Jun 12 – Sep 10

1940–2024 · 2026 highlighted · trend +0.03" per decade (wetter since 1940)

Warmest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 2004 60.5°F
2 2019 60.5°F
3 1997 60.3°F
4 1977 59.8°F
5 2016 59.2°F
6 2005 59.0°F
7 2013 58.8°F
8 2007 58.7°F
9 1957 58.5°F
10 2017 58.5°F

Coolest Jun 12 – Sep 10 on Record

# Year Avg Temp
1 1980 52.9°F
2 1955 53.2°F
3 1948 53.3°F
4 1966 53.4°F
5 1961 53.4°F
6 1969 53.5°F
7 1970 53.5°F
8 1965 53.6°F
9 1949 53.7°F
10 1981 54.0°F
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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