| 2025-06-07 | 7:30 AM | T | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-06-06 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-06-05 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-06-04 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-06-03 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-06-02 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-06-01 | 7:00 AM | 0.02 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-31 | 7:00 AM | 1.49 | 0.0 | 0.00 | 0.0 | 0.00 | | 1 inch fell between 7:00 am and 8:30 pm yesterday, with several episodes of heavy rain. |
| 2025-05-30 | 7:00 AM | 0.02 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-29 | 7:00 AM | 0.96 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-28 | 6:20 AM | 0.42 | 0.0 | 0.00 | 0.0 | 0.00 | | Rain continued falling at time of observation. |
| 2025-05-27 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-26 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-25 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-24 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-23 | 7:00 AM | 0.12 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-22 | 7:00 AM | 0.74 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-21 | 7:00 AM | 0.01 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-20 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-19 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-18 | 7:00 AM | T | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-17 | 7:00 AM | 0.14 | 0.0 | 0.00 | 0.0 | 0.00 | | Major storm cell hit Fairfax county, resulting in numerous large trees being toppled along with electric service wires. It hit zip codes 22308, 22307, 22306 about 5:15 pm yesterday. As of 12:15 pm today over 13,000 customers in the county, and 30,000 customers in the state, are still without power. |
| 2025-05-16 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-15 | 7:00 AM | 0.43 | 0.0 | 0.00 | 0.0 | 0.00 | | Heavy rain was heard at 9:47 pm for about 7 minutes, and again at 10:29 pm for anout 10 minutes. |
| 2025-05-14 | 7:00 AM | 1.34 | 0.0 | 0.00 | 0.0 | 0.00 | | Rained most of the last 24 hours. |
| 2025-05-13 | 6:20 AM | 0.36 | 0.0 | 0.00 | 0.0 | 0.00 | | Rain continuing at time of observation. |
| 2025-05-12 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-11 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-10 | 7:00 AM | 0.03 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-09 | 7:00 AM | 0.57 | 0.0 | 0.00 | 0.0 | 0.00 | | Less than .05 fell during daylight hours; the rest sometime overnight. Very light drizzle continued at time of observation. |
| 2025-05-08 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-07 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-06 | 7:00 AM | 0.52 | 0.0 | 0.00 | 0.0 | 0.00 | | Rain began at 7:05 am and was later heavy at times. |
| 2025-05-05 | 7:00 AM | 0.18 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-04 | 7:00 AM | 0.39 | 0.0 | 0.00 | 0.0 | 0.00 | | Rained overnight |
| 2025-05-03 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-05-02 | 7:00 AM | 0.01 | 0.0 | 0.00 | 0.0 | 0.00 | | Rained at night. |
| 2025-05-01 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-30 | 7:00 AM | 0.02 | 0.0 | 0.00 | 0.0 | 0.00 | | Brief downpour about 2:28 am |
| 2025-04-29 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-28 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-27 | 7:00 AM | 0.30 | 0.0 | 0.00 | 0.0 | 0.00 | | Several small storm cells in the late afternoon |
| 2025-04-26 | 7:00 AM | 0.17 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-25 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-24 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-23 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-22 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-21 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-20 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-19 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-18 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-17 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-16 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-15 | 7:00 AM | 0.07 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-14 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-13 | 7:00 AM | 0.03 | 0.0 | 0.00 | 0.0 | 0.00 | | Rained a trace after 6 pm then more after 10 pm. Specific times not recorded. |
| 2025-04-12 | 7:00 AM | 1.54 | 0.0 | 0.00 | 0.0 | 0.00 | | At least 1 inch fell between 7 am and 7 pm yesterday (but exact measurement was not obtained). The remainder fell after 7 pm. Partly cloudy skies but no rain this morning. |
| 2025-04-11 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | Expecting rain today but it has not arrived yet |
| 2025-04-10 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-09 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-08 | 7:00 AM | 0.67 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-07 | 6:55 AM | 0.31 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-06 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-05 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-04 | 7:00 AM | 0.02 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-03 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-02 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-04-01 | 7:00 AM | 0.70 | 0.0 | 0.00 | 0.0 | 0.00 | | Rain began about 7:50 pm. |
| 2025-03-31 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-30 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-29 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-28 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-27 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-26 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-25 | 7:00 AM | 0.18 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-24 | 6:45 AM | 0.03 | 0.0 | 0.00 | 0.0 | 0.00 | | Light rain continues at time of observation. |
| 2025-03-23 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-22 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-21 | 7:00 AM | 0.39 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-20 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-19 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-18 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-17 | 7:00 AM | 0.12 | 0.0 | 0.00 | 0.0 | 0.00 | | Rained overnigh. |
| 2025-03-16 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-15 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-14 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-13 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-12 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-11 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-10 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-09 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-08 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-07 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-06 | 7:00 AM | 0.86 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-05 | 6:30 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-04 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-03 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-02 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-03-01 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-28 | 7:00 AM | 0.03 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-27 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-26 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-25 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-24 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-23 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-22 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-21 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-20 | 7:00 AM | T | T | T | T | T | | |
| 2025-02-19 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-18 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-17 | 7:00 AM | 0.27 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-16 | 7:20 AM | 0.64 | 0.0 | 0.00 | 0.0 | 0.00 | | Naturally fallen snow is gone. All that remains are small piles of plowed and shoveled snow. |
| 2025-02-15 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | Shaded locations have a little snow remaining; otherwise, all that is left are remnants of piles from plowing or shoveling. |
| 2025-02-14 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | Maybe 10% snow cover. Overnight most of the naturally-fallen snow melted or evaporated due to thd strong winds. Most remaining snow are little piles left from plowing or shoveling. |
| 2025-02-13 | 6:30 AM | 0.37 | 0.0 | 0.00 | 3.5 | 0.64 | | Snowpack is very wet, with much melt and compaction since yesterday, and has a mottled, mildly lumpy look to it. Plowed and shoveled roads, driveways, and sidewalks are clear. Core taken for snowpack SWE. |
| 2025-02-12 | 7:45 AM | 0.75 | 7.2 | 0.73 | 7.2 | 0.74 | | Snow began after 1 pm and continued into the evening. Snow is “good packing snow” but somewhat wet. |
| 2025-02-11 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-10 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-09 | 7:00 AM | 0.04 | T | T | 0.0 | 0.00 | | Some snow pellets came down but melted soon after contact with the ground. |
| 2025-02-08 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-07 | 7:00 AM | 0.21 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-06 | 6:30 AM | 0.83 | 0.0 | 0.00 | 0.0 | 0.00 | | Rain began at 8:30 pm and continues st time of observation. |
| 2025-02-05 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-04 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-03 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-02 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-02-01 | 7:00 AM | 0.86 | 0.0 | 0.00 | 0.0 | 0.00 | | Much needed rain continued into the night. Snow gone except for piles of shoveled snow. |
| 2025-01-31 | 6:20 AM | 0.04 | 0.0 | 0.00 | T | T | | Snowpack almost gone. |
| 2025-01-30 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | Less than 50% of ground has snow cover, mostly remaining in shaded areas. |
| 2025-01-29 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | A lot of melt yesterday but some patchy snow remains |
| 2025-01-28 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | Less than 50% of the ground has snow/ice, which primarily remains in shaded areas. |
| 2025-01-27 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | More than half of the ground is bare. |
| 2025-01-26 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | Some snow remains but more than half of the ground is bare. |
| 2025-01-25 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | Snow remains on ground in shaded areas; gone from areas that get sun. More than half of the ground is bare. |
| 2025-01-24 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | Snow remains in shaded areas. |
| 2025-01-23 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | Snow now at perhaps 50% cover of varying depth. The snow has persisted due to unusual cold temperatures, with snow in shaded areas remaining. |
| 2025-01-22 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | |
| 2025-01-21 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | Some snow remains on the ground . |
| 2025-01-20 | 7:00 AM | 0.20 | 0.0 | 0.00 | NA | NA | | |
| 2025-01-19 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | Some snow remains on ground, coverage varies. |
| 2025-01-18 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | Snow remains on ground, still more than 50% coverage |
| 2025-01-17 | 7:00 AM | T | T | T | NA | NA | | Some snowflakes came down, but nothing in the gauge. Some snowpack from previous storm remains on ground.. |
| 2025-01-16 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | Snow remains on ground. No measurement available. |
| 2025-01-15 | 7:00 AM | 0.00 | 0.0 | 0.00 | 1.5 | NA | | Snow on the ground is variable in depth, from 0 to 4 in more shaded areas, hard crust on top, 1.5 inches seems about average. |
| 2025-01-14 | 7:00 AM | 0.00 | 0.0 | 0.00 | 2.0 | NA | | Snowpack depth vaiable between 0 to 4 inches, best guess at 2 inch average, but not yet down to 50% cover. Hard crust again this morning. |
| 2025-01-13 | 7:00 AM | 0.00 | 0.0 | 0.00 | 3.0 | NA | | Snowpack depth is variable. |
| 2025-01-12 | 7:00 AM | 0.00 | 0.0 | 0.00 | 3.3 | NA | | Snowpack depth varies widely between 1.75 and 5 inches with amounts around 4 or lower more common. So 3.3 is my best estimate for an average. |
| 2025-01-11 | 7:00 AM | 0.11 | 1.0 | 0.11 | 4.5 | NA | | Gauge catch and core SWE were same. Snow depth variable due to wind. |
| 2025-01-10 | 7:00 AM | 0.00 | 0.0 | 0.00 | NA | NA | | Snow remains on the ground. Much wind yesterday. |
| 2025-01-09 | 7:00 AM | 0.00 | 0.0 | 0.00 | 5.7 | NA | | Due to wind, snowpack has a variable depth |
| 2025-01-08 | 7:00 AM | 0.00 | 0.0 | 0.00 | 7.7 | NA | | Snow depth taken from a relatively undisturbed area. There was some wind yesterday evening. |
| 2025-01-07 | 8:00 AM | 0.32 | 2.5 | 0.36 | 8.5 | NA | | It’s possible that the snowfall SWE was increased a bit by wind-blown snow. Snow is is fluffy good-packing snow. |
| 2025-01-06 | 8:00 AM | 0.73 | 6.0 | 0.77 | 6.0 | 0.77 | | Fluffy, good packing snow, no wind. |
| 2025-01-05 | 7:00 AM | 0.00 | 0.0 | 0.00 | T | T | | Snowpack coverage is 50% or less, patchy, melted in areas exposed to sun, remains in areas that remain mostly shaded, of variable depth, generally less than .5 inch. |
| 2025-01-04 | 7:00 AM | 0.08 | 0.5 | NA | 0.5 | NA | | I am told it got very dark, and there was a burst of snow with thunder. Snowfall depth was measured at 5:45 pm before it had a chance to settle. Snow surface was irregular with little hills snd valleys, consisting of both fluffy stuff and small granular balls. Same measurement used for snowpack. Snow on grass only. Snow on pavement melted. |
| 2025-01-03 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-01-02 | 7:00 AM | 0.00 | 0.0 | 0.00 | 0.0 | 0.00 | | |
| 2025-01-01 | 7:00 AM | 0.31 | 0.0 | 0.00 | 0.0 | 0.00 | | |