Public Information Statement
Issued by NWS Anchorage, AK

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Public Information Statement...CORRECTED
National Weather Service Anchorage AK
954 PM AKDT Tue Jun 1 2021

...Anchorage International Airport Climate Highlights for May
2021...

...Two more record lows set...
...12th Wettest May...
...30th Warmest May...
...4th Coldest Monthly Low in May...
...Coldest Monthly Low in May since 2001...

The period of record includes 70 Mays.

...Temperature...

May 2021 was the 30th warmest May on record with an average
temperature of 48.0 degrees. This is 0.1 degrees below the normal
of 48.1 degrees.

The average high in May was 55.8 degrees, which was 0.5 degrees
below the normal of 56.3 degrees. The average low was 40.2
degrees, which was 0.2 degrees above the normal of 40.0 degrees.

May 2021 was the coldest May since 2017.

May 2021 ended a streak of 3 consecutive months of below average
temperatures.

15 days in May had below normal temperatures.
12 days in May had above normal temperatures.
4 days in May had normal temperatures (within 1/2 degree).

1 day in May was more than 5 degrees above the daily normal.
2 days in May were more than 5 degrees below the daily normal.

The most above normal day in May occurred on the 25th, which was
5.9 degrees warmer than the daily normal.

The most below normal day in May occurred on the 29th, which was
6.2 degrees colder than the daily normal.

The warmest daily high in May occurred on the 25th, when the high
reached 71 degrees. This ties 1997 and 1957 for the 19th warmest
monthly high in May. This was the coolest May monthly high since
2019. The normal monthly high in May is 67 degrees.

The 71 degree high on the 25th was the 17th earliest Spring 70
degree temperature on record.

The coldest daily low in May occurred on the 1st when the low
dropped to 26, setting a daily record low. This ties 1952 for the
4th coldest monthly low in May. This was the coldest May monthly
low since 2001. The normal monthly low for May is 30 degrees.

Top 10 Coldest Monthly Lows in May
------------------------------------
1) 17 degrees- 1964.
2) 24 degrees- 2001.
3) 25 degrees- 1992.
4) 26 degrees- 2021, 1952.
6) 27 degrees- 2004, 2002, 1982, 1973, 1965, 1963, 1957.

The 26 degree low on May 1st was the 6th coldest low temperature
on record in May.

Top 10 Coldest Daily Lows in May
----------------------------------
1) 17 degrees- May 10, 1964.
2) 18 degrees- May 9, 1964.
3) 20 degrees- May 8, 1964.
4) 24 degrees- May 3, 2001.
5) 25 degrees- May 4, 1992.
6) 26 degrees- May 1, 2021; May 4, 2001; May 1, 1952.
9) 27 degrees- May 8, 2004; May 2, 2002.

May had 1 day with a high of 70 or more. Average: 1 day.
May had 6 days with highs of 60 or more. Average: 7 days.
May had 30 days with highs of 50 or more. Average: 26 days.

May had 2 days with lows below freezing. Average: 2 days.
May had 11 days with lows in the 30s and colder. Average: 16 days.
May had all 31 days with lows in the 40s and colder. Average: 30 days.

...Precipitation...

May 2021 was the 12th wettest May on record, with 1.09 inches of
precipitation measured for the month. The normal precipitation in
May is 0.65 inches. Thus, May had 168% of its normal
precipitation.

The wettest day in May was on the 29th, with 0.58 inches of
precipitation measured, setting a new daily record.

The 0.58 inches measured on the 29th was the 7th wettest day in
May on record.

Top 10 Wettest Days in May
---------------------------
1) 0.97 inches- May 30, 1980.
2) 0.76 inches- May 26, 2019.
3) 0.75 inches- May 27, 1969.
4) 0.68 inches- May 24, 1995; May 30, 1968.
6) 0.60 inches- May 31, 1967.
7) 0.58 inches- May 29, 2021.
8) 0.56 inches- May 8, 2019; May 30, 1997.
10) 0.54 inches- May 19, 2000.

May 2021 was the wettest May since 2019.

14 of 31 days in May had a trace or more of precipitation.
9 days had measurable precipitation.
2 days had 1/10 inch and 1/4 inch or more of precipitation.
1 day had 1/2 inch or more of precipitation.

...Snowfall...

No snowfall was measured in May 2021. 14 of 70 Mays have reported
measurable snow, and 21 of 70 Mays have reported at least a trace
of snow during the month.

...Snow Season...

69.7 inches of snow have been measured for the snow season
through the end of May. The normal is 77.9 inches. Thus,
Anchorage is 10.2 inches below normal for the snow season
snowfall. Anchorage has had 89% of its normal snow season
snowfall for the year.

Snow Season 2020-2021 will end the year as the 36th snowiest snow
season on record, and the 34th least snowiest snow season on
record. This is down 1 place from the end of April.

...May 2021 vs. May 2020...

May 2021 was cooler and wetter than May 2020.

Temperature: 48.0 degrees in 2021 vs. 50.4 degrees in 2020.
Precipitation: 1.09 inches in 2021 vs. 0.63 inches in 2020.
Snowfall: 0 inches in 2021 vs. 0 inches in 2020.
Snow Season: 69.7 inches in 2020-2021 vs. 88.6 inches in 2019-2020.

...Daily Records Set in May 2021...

Type............Date...New Record...Old Record (Year)

Low Maximum.....29th...47 degrees....47 degrees (1985)
Low Minimum.....01st...26 degrees....26 degrees (1952)
Precipitation...28th...0.28 inches...0.27 inches (1985)
Precipitation...29th...0.58 inches...0.48 inches (1985)

...Daily Records Count for 2021 (Change) [Most Recent Previous]...

High Maximum....2 (00) [April 23, 2021]
High Minimum....0 (00) [October 7, 2020]
Low Maximum.....3 (+1) [May 29, 2021]
Low Minimum.....4 (+1) [May 1, 2021]
Precipitation...4 (+2) [May 29, 2021]
Snowfall........0 (00) [December 19, 2020]
Snow Depth......10 (00) [April 16, 2021]

...Climate Highlights for June 2021...

Normal High: 63.4 degrees.
Normal Temperature: 55.9 degrees.
Normal Low: 48.4 degrees.
Normal Precipitation: 1.02 inches.
Normal Snowfall: 0.0 inches.

Warmest June: 60.5 degrees average temperature (2019).
Warmest Day: 85 degrees on June 14, 1961.
Coldest June: 51.1 degrees average temperature (1971).
Coldest Day: 33 degrees on June 4, 1961.
Wettest June: 3.40 inches (1962).
Wettest Day: 1.62 inches on June 12, 1962.
Driest June: 0.02 inches (1952).

...Calendar of Astronomy and Federal Holidays...

Beginning of the Month Daylight: 18 hours 45 minutes.
Third Quarter Moon: June 1st at 11:24pm.
Last Day Gaining 3 Minutes of Daylight Per Day: June 4th.
First Day with 19 Hours of Daylight: June 6th.
New Moon: June 10th at 2:52am.
Last Day Gaining 2 Minutes of Daylight Per Day: June 10th.
Last Day Gaining 1 Minute of Daylight Per Day: June 15th.
First Quarter Moon: June 17th at 7:54pm.
Earliest Sunrise of the Year: 4:20am on June 18th.
Summer Solstice: June 20th at 7:32pm.
Daylight on the Summer Solstice: 19 Hours, 21 Minutes, 27 Seconds.
Latest Sunset of the Year: June 22nd at 11:42pm.
Full (Strawberry) Moon: June 24th at 10:39am.
First Day Losing 1 Minute of Daylight Per Day: June 26th.
Third Quarter Moon: July 1st at 1:10pm.
First Day Losing 2 Minutes of Daylight Per Day: July 1st.
End of the Month Daylight: 19 hours 11 minutes.
Total Monthly Daylight Gain: 26 minutes.

Next Eclipse Viewable in Anchorage:
Partial Lunar Eclipse- November 18-19, 2021 at 12:02am Nov. 19th.

$$

Wegman


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