Weather History for KSFO - May, 2019
| Actual | Average | Record | |
|---|---|---|---|
| Temperature | |||
| Mean Temperature | 62 °F | 59 °F | |
| Max Temperature | 69 °F | 67 °F | 84 °F (2006) |
| Min Temperature | 54 °F | 51 °F | 43 °F (1953) |
| Degree Days | |||
| Heating Degree Days | 3 | 6 | |
| Month to date heating degree days | 58 | 66 | |
| Since 1 July heating degree days | 2177 | 2434 | |
| Cooling Degree Days | 0 | 0 | |
| Month to date cooling degree days | 0 | 0 | |
| Year to date cooling degree days | 9 | 6 | |
| Growing Degree Days | 9 (Base 50) | ||
| Moisture | |||
| Dew Point | 50 °F | ||
| Average Humidity | 69 | ||
| Maximum Humidity | 83 | ||
| Minimum Humidity | 55 | ||
| Precipitation | |||
| Precipitation | 0.00 in | 0.01 in | 0.20 in (1963) |
| Month to date precipitation | T | 0.20 | |
| Year to date precipitation | 16.43 | 12.70 | |
| Sea Level Pressure | |||
| Sea Level Pressure | 29.83 in | ||
| Wind | |||
| Wind Speed | 13 mph (WNW) | ||
| Max Wind Speed | 23 mph | ||
| Max Gust Speed | 26 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. 10, 2019 | Rise | Set |
|---|---|---|
| Actual Time | 6:04 AM PDT | 8:07 PM PDT |
| Civil Twilight | 5:35 AM PDT | 8:36 PM PDT |
| Nautical Twilight | 5:00 AM PDT | 9:12 PM PDT |
| Astronomical Twilight | 4:22 AM PDT | 9:50 PM PDT |
| Moon | 11:11 AM PDT (5/10) | 1:04 AM PDT (5/10) |
| Length of Visible Light | 15h 00m | |
| Length of Day |
14h 03m
|
|
| Waxing Crescent, 36% of the Moon is Illuminated | ||||
| May 10 Waxing Crescent | May 11 First Quarter | May 18 Full | May 26 Last Quarter | Jun 3 New |
Hourly Weather History & Observations
| Time (PDT) | Temp. | Dew Point | Humidity | Pressure | Visibility | Wind Dir | Wind Speed | Gust Speed | Precip | Events | Conditions |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 12:56 AM | 55.9 °F | 48.9 °F | 77% | 29.81 in | 10.0 mi | WNW | 8.1 mph | - | N/A | Mostly Cloudy | |
| 1:56 AM | 55.0 °F | 48.9 °F | 80% | 29.82 in | 10.0 mi | West | 10.4 mph | - | N/A | Mostly Cloudy | |
| 2:54 AM | 57.2 °F | 48.2 °F | 72% | 29.80 in | 10.0 mi | West | 12.7 mph | - | N/A | Mostly Cloudy | |
| 2:56 AM | 57.0 °F | 48.9 °F | 74% | 29.80 in | 10.0 mi | West | 11.5 mph | - | N/A | Mostly Cloudy | |
| 3:56 AM | 55.9 °F | 48.9 °F | 77% | 29.79 in | 10.0 mi | West | 10.4 mph | - | N/A | Mostly Cloudy | |
| 4:56 AM | 55.0 °F | 48.0 °F | 77% | 29.78 in | 10.0 mi | West | 10.4 mph | - | N/A | Mostly Cloudy | |
| 5:56 AM | 54.0 °F | 48.9 °F | 83% | 29.79 in | 10.0 mi | WNW | 8.1 mph | - | N/A | Overcast | |
| 6:03 AM | 54.0 °F | 48.9 °F | 83% | 29.78 in | 10.0 mi | West | 10.4 mph | - | N/A | Overcast | |
| 6:56 AM | 54.0 °F | 48.9 °F | 83% | 29.81 in | 10.0 mi | WNW | 8.1 mph | - | N/A | Overcast | |
| 7:56 AM | 55.9 °F | 48.9 °F | 77% | 29.80 in | 10.0 mi | West | 9.2 mph | - | N/A | Overcast | |
| 8:56 AM | 59.0 °F | 50.0 °F | 72% | 29.80 in | 10.0 mi | NW | 6.9 mph | - | N/A | Mostly Cloudy | |
| 9:36 AM | 61.0 °F | 50.0 °F | 67% | 29.80 in | 10.0 mi | NNW | 8.1 mph | - | N/A | Partly Cloudy | |
| 9:56 AM | 61.0 °F | 51.1 °F | 70% | 29.80 in | 10.0 mi | NNW | 10.4 mph | - | N/A | Partly Cloudy | |
| 10:56 AM | 64.9 °F | 50.0 °F | 58% | 29.81 in | 10.0 mi | NW | 11.5 mph | - | N/A | Partly Cloudy | |
| 11:56 AM | 66.0 °F | 50.0 °F | 56% | 29.81 in | 10.0 mi | WNW | 16.1 mph | - | N/A | Partly Cloudy | |
| 12:56 PM | 66.0 °F | 51.1 °F | 59% | 29.81 in | 10.0 mi | WNW | 17.3 mph | - | N/A | Partly Cloudy | |
| 1:56 PM | 66.9 °F | 51.1 °F | 57% | 29.82 in | 10.0 mi | WNW | 16.1 mph | - | N/A | Partly Cloudy | |
| 2:56 PM | 68.0 °F | 51.1 °F | 55% | 29.82 in | 10.0 mi | WNW | 16.1 mph | - | N/A | Scattered Clouds | |
| 3:56 PM | 68.0 °F | 51.1 °F | 55% | 29.83 in | 10.0 mi | WNW | 19.6 mph | - | N/A | Scattered Clouds | |
| 4:56 PM | 64.9 °F | 51.1 °F | 61% | 29.84 in | 10.0 mi | WNW | 21.9 mph | - | N/A | Scattered Clouds | |
| 5:56 PM | 61.0 °F | 50.0 °F | 67% | 29.85 in | 10.0 mi | WNW | 17.3 mph | - | N/A | Scattered Clouds | |
| 6:56 PM | 59.0 °F | 50.0 °F | 72% | 29.86 in | 10.0 mi | West | 20.7 mph | - | N/A | Scattered Clouds | |
| 7:56 PM | 57.0 °F | 48.9 °F | 74% | 29.88 in | 10.0 mi | West | 17.3 mph | - | N/A | Scattered Clouds | |
| 8:56 PM | 57.9 °F | 48.9 °F | 72% | 29.90 in | 10.0 mi | WNW | 10.4 mph | - | N/A | Partly Cloudy | |
| 9:56 PM | 55.9 °F | 50.0 °F | 80% | 29.93 in | 10.0 mi | WNW | 11.5 mph | - | N/A | Partly Cloudy | |
| 10:56 PM | 55.9 °F | 50.0 °F | 80% | 29.94 in | 10.0 mi | WNW | 13.8 mph | - | N/A | Partly Cloudy | |
| 11:56 PM | 55.9 °F | 50.0 °F | 80% | 29.95 in | 10.0 mi | West | 10.4 mph | - | N/A | Partly Cloudy |