Weather Almanac for KSEA - June, 2019
| Average | Record | ||
|---|---|---|---|
| Temperature | |||
| Mean Temperature | 62 °F | ||
| Max Temperature | 71 °F | 88 °F (2004) | |
| Min Temperature | 53 °F | 43 °F (1960) | |
| Degree Days | |||
| Heating Degree Days | 4 | ||
| Month to date heating degree days | 109 | ||
| Since 1 June heating degree days | 109 | ||
| Since 1 July heating degree days | 4662 | ||
| Cooling Degree Days | 1 | ||
| Month to date cooling degree days | 8 | ||
| Year to date cooling degree days | 14 | ||
| Since 1 June cooling degree days | 8 | ||
| Moisture | |||
| Dew Point | |||
| Average Humidity | |||
| Maximum Humidity | |||
| Minimum Humidity | |||
| Precipitation | |||
| Precipitation | 0.05 in | 1.14 in (1984) | |
| Month to date precipitation | 1.17 | ||
| Year to date precipitation | 18.61 | ||
| 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. 20, 2019 | Rise | Set |
|---|---|---|
| Actual Time | 5:11 AM PDT | 9:09 PM PDT |
| Civil Twilight | 4:31 AM PDT | 9:50 PM PDT |
| Nautical Twilight | 3:35 AM PDT | 10:46 PM PDT |
| Astronomical Twilight | 2:06 AM PDT | 12:14 AM PDT |
| Moon | 11:50 PM PDT (6/20) | 8:17 AM PDT (6/20) |
| Length of Visible Light | 17h 18m | |
| Length of Day |
15h 57m
|
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| Waning Gibbous, 89% of the Moon is Illuminated | ||||
| Jun 20 Waning Gibbous | Jun 25 Last Quarter | Jul 2 New | Jul 9 First Quarter | Jul 16 Full |