Climate & archive — Washington 📅
Actual day-by-day weather, records, monthly climate and “on this day before”.
🔎 Weather for a date or period
📆 On this day before
🏆 Hottest and coldest day in Washington (over the full observation series)
🗓 Monthly climate in Washington
| Month | Day | Night | Precip |
|---|---|---|---|
| January | +6° | -2° | 85 mm |
| February | +9° | -1° | 85 mm |
| March | +13° | +2° | 95 mm |
| April | +19° | +8° | 94 mm |
| May | +24° | +13° | 128 mm |
| June | +29° | +18° | 127 mm |
| July | +31° | +21° | 176 mm |
| August | +30° | +20° | 158 mm |
| September | +26° | +17° | 131 mm |
| October | +20° | +11° | 91 mm |
| November | +14° | +4° | 83 mm |
| December | +9° | +1° | 105 mm |
🕰 Weather in Washington August 18 in past years
📒 For school and home
FAQ about the weather archive in Washington ❓
What was the weather in Washington on a specific date?
Pick a date or range in the form above — we show actual day-by-day weather (ERA5 reanalysis, up to a year back). For today’s date in past years see “On this day before”.
Hottest and coldest day in the history in Washington?
Heat record — +41° (July 7, 2012), cold record — -25° (January 17, 1982). Observations over the full available series.
What's the typical weather in Washington in August?
On average +30° by day, +20° at night, precipitation about 158 mm (ERA5 climate normal).
Since what year is the weather archive in Washington kept?
Climate normals and records come from the ERA5 reanalysis. Actual day-by-day weather is available for the last year.
Climate and weather archive in Washington
Monthly climate normals in Washington (average day and night temperatures, precipitation) are computed from the ERA5 reanalysis. The observation archive accrues from launch. Data: Open-Meteo (ERA5).