Altona climate

Altona Weather in May

NOAA 1991-2020 normals for Ellenburg Depot, 13.4 km from Altona

Average highs run from 59°F on May 1 to 70°F on May 31, and lows from 38°F to 49°F. Normal precipitation for the month is 3.33 in over about 13 wet days.

May day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Altona, in °F, with the record for each date.20406080100151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

May at a glance

Average high
65°F
Average low
44°F
Precipitation
3.33 in
Snowfall
0.5 in
Record high
94°FMay 26, 2010
Record low
27°FMay 1, 2008
Chance of a freeze
77%
Daylight
14 h 16 min to 15 h 21 min
Cloud cover
68%
Humidity
77%
Dew point
47°F
Wind
5.6 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
May 159°F38°F78°F 201327°F 200841%3%
May 260°F39°F87°F 201830°F 200841%3%
May 360°F39°F77°F 201035°F 201641%3%
May 461°F40°F86°F 201533°F 201741%3%
May 561°F40°F76°F 201336°F 202041%2%
May 662°F40°F77°F 201331°F 201241%2%
May 762°F41°F79°F 201330°F 201241%2%
May 862°F41°F83°F 201530°F 201441%2%
May 963°F42°F84°F 201529°F 202042%2%
May 1063°F42°F80°F 201431°F 201042%2%
May 1164°F42°F81°F 202229°F 201042%1%
May 1264°F43°F85°F 202232°F 200942%1%
May 1364°F43°F84°F 202229°F 201042%1%
May 1465°F43°F85°F 202233°F 201342%1%
May 1565°F44°F81°F 202529°F 201342%1%
May 1665°F44°F80°F 202534°F 201643%1%
May 1766°F44°F92°F 201732°F 201643%1%
May 1866°F45°F93°F 201731°F 202343%1%
May 1966°F45°F88°F 202632°F 200943%1%
May 2067°F45°F87°F 202138°F 201643%1%
May 2167°F46°F91°F 200937°F 200843%0%
May 2267°F46°F87°F 202138°F 201543%0%
May 2368°F46°F81°F 202434°F 201544%0%
May 2468°F47°F83°F 201638°F 202344%0%
May 2568°F47°F87°F 201040°F 200844%0%
May 2669°F47°F94°F 201035°F 202344%0%
May 2769°F48°F94°F 201633°F 201344%0%
May 2869°F48°F88°F 202336°F 201344%0%
May 2969°F48°F85°F 201240°F 201445%0%
May 3070°F49°F91°F 201536°F 202145%0%
May 3170°F49°F92°F 201338°F 200945%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Altona, in percent, and of at least 0.1 inch of snowfall.010203040501102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

May 1
sunrise 5:44 AM, sunset 8:00 PM
May 31
sunrise 5:12 AM, sunset 8:33 PM

Every day of May: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00302574 (Ellenburg Depot), public domain. Records: NOAA GHCN-Daily, station USW00064776, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.