Weather Almanac for KSEA - June, 2019
| Average | Record | ||
|---|---|---|---|
| Temperature | |||
| Mean Temperature | 63 °F | ||
| Max Temperature | 72 °F | 92 °F (2015) | |
| Min Temperature | 53 °F | 45 °F (1949) | |
| Degree Days | |||
| Heating Degree Days | 3 | ||
| Month to date heating degree days | 135 | ||
| Since 1 June heating degree days | 135 | ||
| Since 1 July heating degree days | 4688 | ||
| Cooling Degree Days | 1 | ||
| Month to date cooling degree days | 15 | ||
| Year to date cooling degree days | 21 | ||
| Since 1 June cooling degree days | 15 | ||
| Moisture | |||
| Dew Point | |||
| Average Humidity | |||
| Maximum Humidity | |||
| Minimum Humidity | |||
| Precipitation | |||
| Precipitation | 0.04 in | 0.61 in (2001) | |
| Month to date precipitation | 1.46 | ||
| Year to date precipitation | 18.90 | ||
| Wind | |||
| Wind Speed | |||
| Max Wind Speed | |||
| Max Gust Speed | |||
| T = Trace of Precipitation, MM = Missing Value | Source: NWS Daily Summary |
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Astronomy
| Jun. 27, 2019 | Rise | Set |
|---|---|---|
| Actual Time | 5:14 AM PDT | 9:10 PM PDT |
| Civil Twilight | 4:33 AM PDT | 9:50 PM PDT |
| Nautical Twilight | 3:38 AM PDT | 10:46 PM PDT |
| Astronomical Twilight | 2:10 AM PDT | 12:12 AM PDT |
| Moon | 2:13 AM PDT (6/27) | 3:38 PM PDT (6/27) |
| Length of Visible Light | 17h 17m | |
| Length of Day |
15h 56m
|
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| Waning Crescent, 27% of the Moon is Illuminated | ||||
| Jun 27 Waning Crescent | Jul 2 New | Jul 9 First Quarter | Jul 16 Full | Jul 24 Last Quarter |