Atchison, KS Weather

Atchison County9:28 PM CDT39.56°N, 95.12°WElevation 814 ft

Current conditions

Clear
61°
Clear
Feels like 61°
High 75° Wednesday·Low 51° tonight
WindSSE 6 mph
Humidity63%
Dew point48°
Pressure30.22 inHg
Visibility10 mi
Cloud cover53%
UV index0 Low
Sunrise7:36 AM
Sunset6:36 PM

Observed at St. Joseph, Rosecrans Memorial Airport · 1 hr ago

Forecast

10-day

  • Tonight

    A chance of rain showers. Mostly cloudy, with a low around 51. South southeast wind around 3 mph.

  • Wednesday

    A chance of rain showers before 10am. Mostly sunny, with a high near 75. South wind around 3 mph.

  • Wednesday Night

    Mostly clear, with a low around 50. South southeast wind around 2 mph.

National Weather Service forecast updated 3 hrs ago.

Hourly

Hourly forecast
  1. Now Chance Rain Showers 57°10%
  2. 10 PM Chance Rain Showers 56°11%
  3. 11 PM Chance Rain Showers 55°11%
  4. Wed12 AM Chance Rain Showers 55°11%
  5. 1 AM Chance Rain Showers 54°12%
  6. 2 AM Chance Rain Showers 54°12%
  7. 3 AM Chance Rain Showers 53°12%
  8. 4 AM Chance Rain Showers 52°12%
  9. 5 AM Chance Rain Showers 52°13%
  10. 6 AM Chance Rain Showers 51°12%
  11. 7 AM Chance Rain Showers 51°13%
  12. 8 AM Chance Rain Showers 51°10%
  13. 9 AM Chance Rain Showers 55°10%
  14. 10 AM Partly Sunny 61°
  15. 11 AM Mostly Sunny 66°
  16. 12 PM Sunny 69°
  17. 1 PM Sunny 72°
  18. 2 PM Sunny 73°
  19. 3 PM Sunny 74°
  20. 4 PM Sunny 75°
  21. 5 PM Sunny 74°
  22. 6 PM Mostly Clear 72°
  23. 7 PM Mostly Clear 67°
  24. 8 PM Mostly Clear 62°

10-day forecast

Details
  1. TonightOct 20 Chance Rain Showers Chance Rain Showers13%51°
  2. WedOct 21 Chance Rain Showers then Mostly Sunny Chance Rain Showers then Mostly Sunny13%50°75°
  3. ThuOct 22 Sunny Sunny53°77°
  4. FriOct 23 Mostly Sunny Mostly Sunny56°77°
  5. SatOct 24 Mostly Sunny Mostly Sunny55°79°
  6. SunOct 25 Partly Sunny Partly Sunny13%51°73°
  7. MonOct 26 Chance Rain Showers then Slight Chance Showers And Thunderstorms Chance Rain Showers then Slight Chance Showers And Thunderstorms29%47°67°
  8. TueOct 27 Mostly Sunny then Slight Chance Rain Showers Mostly Sunny then Slight Chance Rain Showers18%63°
  9. WedOct 28 Cloudy Cloudy37°52°
  10. ThuOct 29 Sunny Sunny33°58°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Atchison

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Air quality

44
Good
Ozone

Air quality is satisfactory, and air pollution poses little or no risk.

St. Joseph, MO reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:36 AM
Sunset 6:36 PM
Daylight 10 h 59 min (−2 min 28 s tomorrow)
Waxing Gibbous · 73% lit
Moonrise 3:49 PM Moonset 1:39 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low66° / 41°
Record high90° (2003)
Record low22° (1989)
Wettest2.91 in (1949)
Yesterday67° / 37°
Month to date1.40 in (normal 1.88 in)

St Joseph Rosecrans Memorial Ap, records since 1908. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in EAX, issued 3 hrs ago

Key Messages

- A few sprinkles are possible (10-15%) this afternoon through tomorrow morning, but meaningful precipitation is not expected.

- Above normal temperatures expected through this weekend.

- Predominantly dry conditions through the weekend for most locations. Only low precipitation chances (15-30%) for extreme NW MO on Sunday.

Discussion

Issued at 155 PM CDT Tue Oct 20 2026

Mid-level ridging is expected across the Central Plains through much of the forecast period. Current 500-hPa analysis shows a ridge axis centered over the area, with a weak shortwave moving through the flow to the west. Energy from this shortwave has led to light showers developing across eastern KS and western MO, however, with a lot of dry air present in the lowest 10k ft, only a few sprinkles have been able to make it to the ground. Cloud cover, tied to the shortwave, is present over the southwestern portion of the CWA and is expected to spread across the remainder of the area through the afternoon and evening, allowing temperatures to peak around 70F today. The ridge axis shifts west this evening and another shortwave is progged to move over the peak of the ridge and into the Central Plains. This will once again allow showers to form across central and eastern KS. The shortwave is expected to be weakening as it approaches western MO, and with dry air still in place in the lowest 10k ft, a few sprinkles remain possible, but it is unlikely that any meaningful precipitation will be seen across the CWA.

Ridging will remain centered just to the west of the local area on Wednesday, as the shortwave moves to the east. At the surface, high pressure over the Great Lakes will result in light southerly winds. Weak WAA and mid-level height rises will yield high temperatures in the mid-70s. By Thursday, the ridge axis will once again be centered overhead, with the height rises and WAA bringing temperatures into the upper 70s through Saturday. On Saturday, a trough will eject across the northern Rockies resulting in lee cyclogenesis in MT. This system will lift northeast into Canada and its cold front will advance towards the Central Plains, but is not expected to make it this far south before stalling out. Although it will remain stalled north of the area, forcing along the front may be enough to see a few showers on Sunday across far northwestern MO, although the chances remain low (15-30%) given the presence of dry low- level air. Another trough ejection on Sunday should be enough force the cold front across the area on Monday, bringing high temperatures back towards seasonal normals in the low-to-mid 60s.

Aviation

Issued at 555 PM CDT Tue Oct 20 2026

VFR conditions through the period with a light southerly wind. Looking at increasing coverage of clouds at 10-15K feet, and could see a few sprinkles but no visibility restriction is expected.

Eax Watches

MO...None. KS...None.

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 4Search index and reflects what the press published. Terms of use.