Weather History for KSFO - May, 2019
| Actual | Average | Record | |
|---|---|---|---|
| Temperature | |||
| Mean Temperature | 62 °F | 60 °F | |
| Max Temperature | 71 °F | 68 °F | 91 °F (1982) |
| Min Temperature | 53 °F | 52 °F | 45 °F (1953) |
| Degree Days | |||
| Heating Degree Days | 3 | 5 | |
| Month to date heating degree days | 149 | 146 | |
| Since 1 July heating degree days | 2268 | 2514 | |
| Cooling Degree Days | 0 | 0 | |
| Month to date cooling degree days | 0 | 0 | |
| Year to date cooling degree days | 9 | 6 | |
| Growing Degree Days | 12 (Base 50) | ||
| Moisture | |||
| Dew Point | 50 °F | ||
| Average Humidity | 74 | ||
| Maximum Humidity | 89 | ||
| Minimum Humidity | 59 | ||
| Precipitation | |||
| Precipitation | 0.00 in | 0.01 in | 0.14 in (1960) |
| Month to date precipitation | 2.00 | 0.40 | |
| Year to date precipitation | 18.43 | 12.90 | |
| Sea Level Pressure | |||
| Sea Level Pressure | 29.98 in | ||
| Wind | |||
| Wind Speed | 10 mph (WSW) | ||
| Max Wind Speed | 23 mph | ||
| Max Gust Speed | 27 mph | ||
| Visibility | 10 miles | ||
| Events | |||
| T = Trace of Precipitation, MM = Missing Value | Source: NWS Daily Summary |
Daily Weather History Graph
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Astronomy
| May. 24, 2019 | Rise | Set |
|---|---|---|
| Actual Time | 5:53 AM PDT | 8:19 PM PDT |
| Civil Twilight | 5:23 AM PDT | 8:49 PM PDT |
| Nautical Twilight | 4:46 AM PDT | 9:26 PM PDT |
| Astronomical Twilight | 4:05 AM PDT | 10:07 PM PDT |
| Moon | 12:48 AM PDT (5/24) | 10:59 AM PDT (5/24) |
| Length of Visible Light | 15h 26m | |
| Length of Day |
14h 25m
|
|
| Waning Gibbous, 68% of the Moon is Illuminated | ||||
| May 24 Waning Gibbous | May 26 Last Quarter | Jun 3 New | Jun 9 First Quarter | Jun 17 Full |
Hourly Weather History & Observations
| Time (PDT) | Temp. | Dew Point | Humidity | Pressure | Visibility | Wind Dir | Wind Speed | Gust Speed | Precip | Events | Conditions |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12:33 AM | 55.9 °F | 48.9 °F | 77% | 29.99 in | 9.0 mi | SSW | 6.9 mph | - | N/A | Mostly Cloudy | |
| 12:54 AM | 55.4 °F | 48.2 °F | 77% | 30.00 in | 10.0 mi | SW | 5.8 mph | - | N/A | Partly Cloudy | |
| 12:56 AM | 55.0 °F | 48.9 °F | 80% | 30.00 in | 10.0 mi | SW | 5.8 mph | - | N/A | Partly Cloudy | |
| 1:56 AM | 55.0 °F | 48.0 °F | 77% | 30.00 in | 10.0 mi | SSW | 8.1 mph | - | N/A | Partly Cloudy | |
| 2:56 AM | 55.0 °F | 48.9 °F | 80% | 30.01 in | 10.0 mi | SSW | 9.2 mph | - | N/A | Partly Cloudy | |
| 3:56 AM | 55.0 °F | 48.0 °F | 77% | 30.00 in | 10.0 mi | SSW | 6.9 mph | - | N/A | Partly Cloudy | |
| 4:56 AM | 55.0 °F | 48.0 °F | 77% | 30.01 in | 10.0 mi | SW | 6.9 mph | - | N/A | Partly Cloudy | |
| 5:56 AM | 55.0 °F | 48.0 °F | 77% | 30.01 in | 10.0 mi | SSW | 6.9 mph | - | N/A | Partly Cloudy | |
| 6:56 AM | 55.0 °F | 48.0 °F | 77% | 30.02 in | 10.0 mi | South | 6.9 mph | - | N/A | Scattered Clouds | |
| 7:56 AM | 59.0 °F | 50.0 °F | 72% | 30.03 in | 10.0 mi | Calm | Calm | - | N/A | Partly Cloudy | |
| 8:56 AM | 61.0 °F | 51.1 °F | 70% | 30.03 in | 10.0 mi | Calm | Calm | - | N/A | Mostly Cloudy | |
| 9:56 AM | 63.0 °F | 51.1 °F | 65% | 30.03 in | 10.0 mi | Calm | Calm | - | N/A | Scattered Clouds | |
| 10:56 AM | 64.0 °F | 53.1 °F | 67% | 30.03 in | 10.0 mi | WNW | 9.2 mph | - | N/A | Mostly Cloudy | |
| 11:56 AM | 64.0 °F | 52.0 °F | 65% | 30.04 in | 10.0 mi | WNW | 19.6 mph | - | N/A | Scattered Clouds | |
| 12:56 PM | 64.9 °F | 52.0 °F | 63% | 30.02 in | 10.0 mi | West | 12.7 mph | 23.0 mph | N/A | Partly Cloudy | |
| 1:56 PM | 66.0 °F | 53.1 °F | 63% | 29.99 in | 10.0 mi | NNW | 11.5 mph | - | N/A | Partly Cloudy | |
| 2:56 PM | 66.9 °F | 54.0 °F | 63% | 29.97 in | 10.0 mi | WNW | 13.8 mph | - | N/A | Scattered Clouds | |
| 3:46 PM | 66.9 °F | 53.1 °F | 61% | 29.95 in | 10.0 mi | West | 16.1 mph | - | N/A | Scattered Clouds | |
| 3:56 PM | 68.0 °F | 53.1 °F | 59% | 29.96 in | 10.0 mi | West | 16.1 mph | - | N/A | Scattered Clouds | |
| 4:56 PM | 64.9 °F | 52.0 °F | 63% | 29.94 in | 10.0 mi | West | 18.4 mph | - | N/A | Scattered Clouds | |
| 5:56 PM | 61.0 °F | 51.1 °F | 70% | 29.94 in | 9.0 mi | West | 18.4 mph | 25.3 mph | N/A | Mostly Cloudy | |
| 6:56 PM | 57.9 °F | 50.0 °F | 75% | 29.94 in | 10.0 mi | WSW | 13.8 mph | - | N/A | Mostly Cloudy | |
| 7:56 PM | 55.0 °F | 50.0 °F | 83% | 29.95 in | 10.0 mi | WSW | 10.4 mph | - | N/A | Scattered Clouds | |
| 8:09 PM | 55.0 °F | 51.1 °F | 86% | 29.95 in | 10.0 mi | West | 13.8 mph | - | N/A | Mostly Cloudy | |
| 8:56 PM | 55.0 °F | 51.1 °F | 86% | 29.94 in | 10.0 mi | West | 16.1 mph | - | N/A | Mostly Cloudy | |
| 9:56 PM | 55.9 °F | 51.1 °F | 84% | 29.96 in | 10.0 mi | WSW | 11.5 mph | - | N/A | Mostly Cloudy | |
| 10:56 PM | 54.0 °F | 50.0 °F | 86% | 29.95 in | 9.0 mi | WSW | 9.2 mph | - | N/A | Mostly Cloudy | |
| 11:53 PM | 53.6 °F | 48.2 °F | 82% | 29.93 in | 8.0 mi | West | 12.7 mph | - | N/A | Mostly Cloudy | |
| 11:56 PM | 54.0 °F | 48.0 °F | 80% | 29.93 in | 8.0 mi | West | 13.8 mph | - | N/A | Mostly Cloudy |