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Washington, IA Weather
Current conditions
Observed at Washington · 1 hr ago
Forecast
10-day-
Today
Sunny, with a high near 71. Southeast wind 0 to 5 mph.
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Tonight
Mostly clear, with a low around 46. Southeast wind around 5 mph.
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Wednesday
Sunny. High near 73, with temperatures falling to around 71 in the afternoon. South wind 0 to 5 mph.
National Weather Service forecast updated 5 hrs ago.
Hourly
Hourly forecast- Now55°
- 11 AM61°
- 12 PM65°
- 1 PM69°
- 2 PM70°
- 3 PM71°
- 4 PM71°
- 5 PM70°
- 6 PM64°
- 7 PM60°
- 8 PM57°
- 9 PM55°
- 10 PM53°
- 11 PM51°
- Wed12 AM50°
- 1 AM50°
- 2 AM49°
- 3 AM48°
- 4 AM47°
- 5 AM47°
- 6 AM47°
- 7 AM46°
- 8 AM47°
- 9 AM52°
10-day forecast
Details- TodayOct 20Sunny46°71°
- WedOct 21Sunny48°73°
- ThuOct 22Sunny51°74°
- FriOct 23Sunny53°72°
- SatOct 24Partly Sunny55°73°
- SunOct 25Partly Sunny51°71°
- MonOct 26Partly Sunny then Slight Chance Rain Showers16%46°66°
- TueOct 27Cloudy49°58°
- WedOct 28Cloudy0.11 in44°54°
- ThuOct 29Sunny40°55°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Washington
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Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- TueGood (49)
Iowa City, IA reporting area · 54 min ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyWashington, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Iowa City 42 km
- Muscatine 56 km
- Coralville 43 km
- North Liberty 51 km
- Fairfield 39 km
- Mount Pleasant 39 km
- West Liberty 47 km
- Williamsburg 48 km
- Tiffin 45 km
- Solon 59 km
- Kalona 20 km
- West Branch 50 km
Forecasters' discussion
From the National Weather Service office in DVN, issued 4 hrs ago
Key Messages
- Above normal temperatures are expected to continue this week and a 55% chance of continuing through the end of October.
Short Term
Issued at 148 AM CDT Tue Oct 20 2026
A shortwave is visible in water vapor imagery just to our south, which has left a few lingering mid to high clouds over the area. However, these clouds have had little impact on radiational cooling, with much of the area already dropping into the low to mid 40s, though cooler temperatures may be possible in poor drainage areas. Despite the cool start to the day, today will be yet another day basking under the influence of high pressure. Winds will be weak but could support deep mixing, as was observed yesterday. If this happens, temperatures could be a degree or two warmer than the current forecast, which is in the low 70s.
Another shortwave will make its way along the edge of the ridge Wednesday, though any impacts will be limited once more to an increase in cloud cover due to weakening forcing and dry low levels. Otherwise, the forecast remains quite similar to today, if not a couple degrees warmer, as we continue in this pattern of pleasant fall weather.
Long Term
Issued at 148 AM CDT Tue Oct 20 2026
By Thursday, ridge amplification will be underway. The high pressure center will shift southward over the Great Lakes. As a result, highs in the mid 60s to low 70s are expected. Occasional cloud chances each day may help temper the gradual 1-2 degree increase each day. However, while above normal temperatures are expected to continue through the weekend, a warm and dry but dreary day may be in store for at least part of the weekend as warm conveyor belt processes ahead of an approaching shortwave trough may lead to increased cloud cover.
However, there is sizable uncertainty regarding whether this shortwave trough will impact the CWA and if so, when that would occur. Guidance continues to be divided on the track and timing of this trough, with the majority of models and ensembles favoring a slower track with any impacts arriving Monday or later. The exception to this is the GEFS and GFS, which favor a quicker progression with the trough reaching the forecast area by Sunday. As a result, while it appears likely that above normal temperatures will continue, there is low confidence on whether we receive measurable precipitation or continue with this stretch of dry weather.
Aviation
Issued at 619 AM CDT Tue Oct 20 2026
Brief MVFR vsbys are possible at MLI prior to 14z along the Rock river valley. Otherwise, VFR conditions will prevail through the period, with light southeast wind under 7kts.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.