Chance of Wrong · forecast accuracy

Tracking Xweather forecasts vs actuals for 50 US state capitals

← Dashboard · Iowa · America/Chicago · 41.59, -93.63

Latest observation
57.0°F
2026-09-22 12:00 CDT · temp 57.0°F · feels 57.0°F · RH 93% · dew 55.0°F · wind 8.0 mph
Hour samples (7d)
186
Temperature matches
Temp MAE
2.21°
Earliest forecast vs actual

Forecast evolution — Temperature

How the temperature forecast for 2026-09-22 12:00 CDT changed each time we re-collected. Times are local (America/Chicago). Actual: 57.0°F.

Forecast temperature vs actual

X-axis is lead time before the target hour (left = earliest forecast, right = near/at the hour). Blue line = forecast; green dashed = actual once known. Move the cursor across the chart for details.

53°55°56°58°59° 48h39h29h20h10h1h actual 57.0°F Lead time (hours)
Forecast Actual
Forecast temperature error (forecast − actual)

Positive = forecast too warm; negative = too cool. Zero line is perfect. Move the cursor across the chart for details.

-2°-1°+0°+1°+2° 48h39h29h20h10h1h Lead time (hours)
Collected at (local) Lead (h) Forecast Actual Error
2026-09-20 12:00 CDT 48.0 56.0°F 57.0°F -1.0°
2026-09-20 13:00 CDT 47.0 56.0°F 57.0°F -1.0°
2026-09-20 14:00 CDT 46.0 56.0°F 57.0°F -1.0°
2026-09-20 15:00 CDT 45.0 56.0°F 57.0°F -1.0°
2026-09-20 16:00 CDT 44.0 56.0°F 57.0°F -1.0°
2026-09-20 17:00 CDT 43.0 56.0°F 57.0°F -1.0°
2026-09-20 18:00 CDT 42.0 56.0°F 57.0°F -1.0°
2026-09-20 19:00 CDT 41.0 56.0°F 57.0°F -1.0°
2026-09-20 20:00 CDT 40.0 56.0°F 57.0°F -1.0°
2026-09-20 21:00 CDT 39.0 56.0°F 57.0°F -1.0°
2026-09-20 22:00 CDT 38.0 56.0°F 57.0°F -1.0°
2026-09-20 23:00 CDT 37.0 56.0°F 57.0°F -1.0°
2026-09-21 00:00 CDT 36.0 56.0°F 57.0°F -1.0°
2026-09-21 01:00 CDT 35.0 56.0°F 57.0°F -1.0°
2026-09-21 02:00 CDT 34.0 56.0°F 57.0°F -1.0°
2026-09-21 03:00 CDT 33.0 56.0°F 57.0°F -1.0°
2026-09-21 04:00 CDT 32.0 56.0°F 57.0°F -1.0°
2026-09-21 05:00 CDT 31.0 56.0°F 57.0°F -1.0°
2026-09-21 06:00 CDT 30.0 56.0°F 57.0°F -1.0°
2026-09-21 07:00 CDT 29.0 56.0°F 57.0°F -1.0°
2026-09-21 08:00 CDT 28.0 56.0°F 57.0°F -1.0°
2026-09-21 09:00 CDT 27.0 56.0°F 57.0°F -1.0°
2026-09-21 10:00 CDT 26.0 56.0°F 57.0°F -1.0°
2026-09-21 11:00 CDT 25.0 56.0°F 57.0°F -1.0°
2026-09-21 12:00 CDT 24.0 56.0°F 57.0°F -1.0°
2026-09-21 13:00 CDT 23.0 56.0°F 57.0°F -1.0°
2026-09-21 14:00 CDT 22.0 56.0°F 57.0°F -1.0°
2026-09-21 15:00 CDT 21.0 57.0°F 57.0°F +0.0°
2026-09-21 16:00 CDT 20.0 57.0°F 57.0°F +0.0°
2026-09-21 17:00 CDT 19.0 57.0°F 57.0°F +0.0°
2026-09-21 18:00 CDT 18.0 57.0°F 57.0°F +0.0°
2026-09-21 19:00 CDT 17.0 57.0°F 57.0°F +0.0°
2026-09-21 20:00 CDT 16.0 57.0°F 57.0°F +0.0°
2026-09-21 21:00 CDT 15.0 57.0°F 57.0°F +0.0°
2026-09-21 22:00 CDT 14.0 57.0°F 57.0°F +0.0°
2026-09-21 23:00 CDT 13.0 57.0°F 57.0°F +0.0°
2026-09-22 00:00 CDT 12.0 57.0°F 57.0°F +0.0°
2026-09-22 01:00 CDT 11.0 57.0°F 57.0°F +0.0°
2026-09-22 02:00 CDT 10.0 57.0°F 57.0°F +0.0°
2026-09-22 03:00 CDT 9.0 55.0°F 57.0°F -2.0°
2026-09-22 04:00 CDT 8.0 55.0°F 57.0°F -2.0°
2026-09-22 05:00 CDT 7.0 55.0°F 57.0°F -2.0°
2026-09-22 06:00 CDT 6.0 55.0°F 57.0°F -2.0°
2026-09-22 07:00 CDT 5.0 56.0°F 57.0°F -1.0°
2026-09-22 08:00 CDT 4.0 56.0°F 57.0°F -1.0°
2026-09-22 09:00 CDT 3.0 56.0°F 57.0°F -1.0°
2026-09-22 10:00 CDT 2.0 56.0°F 57.0°F -1.0°
2026-09-22 11:00 CDT 1.0 56.0°F 57.0°F -1.0°

Hourly accuracy — Temperature

Click an hour to load its forecast evolution above. Switch metrics with the control above.

Hour (local) Forecast Actual Error Lead (h)
2026-09-22 12:00 CDT 56.0°F 57.0°F -1.0° 48.0
2026-09-22 11:00 CDT 56.0°F 56.0°F +0.0° 48.0
2026-09-22 10:00 CDT 55.0°F 55.0°F +0.0° 48.0
2026-09-22 09:00 CDT 55.0°F 55.0°F +0.0° 48.0
2026-09-22 08:00 CDT 54.0°F 56.0°F -2.0° 48.0
2026-09-22 07:00 CDT 54.0°F 55.0°F -1.0° 48.0
2026-09-22 06:00 CDT 55.0°F 55.0°F +0.0° 48.0
2026-09-22 05:00 CDT 55.0°F 55.0°F +0.0° 48.0
2026-09-22 04:00 CDT 56.0°F 55.0°F +1.0° 48.0
2026-09-22 03:00 CDT 56.0°F 55.0°F +1.0° 48.0
2026-09-22 02:00 CDT 56.0°F 56.0°F +0.0° 48.0
2026-09-22 01:00 CDT 57.0°F 56.0°F +1.0° 48.0
2026-09-22 00:00 CDT 57.0°F 58.0°F -1.0° 48.0
2026-09-21 23:00 CDT 58.0°F 59.0°F -1.0° 48.0
2026-09-21 22:00 CDT 58.0°F 59.0°F -1.0° 48.0
2026-09-21 21:00 CDT 58.0°F 59.0°F -1.0° 48.0
2026-09-21 20:00 CDT 58.0°F 59.0°F -1.0° 48.0
2026-09-21 19:00 CDT 58.0°F 60.0°F -2.0° 48.0
2026-09-21 18:00 CDT 58.0°F 60.0°F -2.0° 48.0
2026-09-21 17:00 CDT 59.0°F 61.0°F -2.0° 48.0
2026-09-21 16:00 CDT 59.0°F 61.0°F -2.0° 48.0
2026-09-21 15:00 CDT 58.0°F 61.0°F -3.0° 48.0
2026-09-21 14:00 CDT 59.0°F 61.0°F -2.0° 48.0
2026-09-21 13:00 CDT 58.0°F 61.0°F -3.0° 48.0
2026-09-21 12:00 CDT 57.0°F 60.0°F -3.0° 48.0
2026-09-21 11:00 CDT 57.0°F 59.0°F -2.0° 48.0
2026-09-21 10:00 CDT 57.0°F 58.0°F -1.0° 48.0
2026-09-21 09:00 CDT 57.0°F 58.0°F -1.0° 48.0
2026-09-21 08:00 CDT 58.0°F 58.0°F +0.0° 48.0
2026-09-21 07:00 CDT 58.0°F 58.0°F +0.0° 48.0
2026-09-21 06:00 CDT 58.0°F 58.0°F +0.0° 48.0
2026-09-21 05:00 CDT 59.0°F 59.0°F +0.0° 48.0
2026-09-21 04:00 CDT 59.0°F 59.0°F +0.0° 48.0
2026-09-21 03:00 CDT 60.0°F 60.0°F +0.0° 48.0
2026-09-21 02:00 CDT 61.0°F 60.0°F +1.0° 48.0
2026-09-21 01:00 CDT 62.0°F 60.0°F +2.0° 48.0
2026-09-21 00:00 CDT 63.0°F 61.0°F +2.0° 48.0
2026-09-20 23:00 CDT 63.0°F 61.0°F +2.0° 48.0
2026-09-20 22:00 CDT 63.0°F 62.0°F +1.0° 48.0
2026-09-20 21:00 CDT 64.0°F 62.0°F +2.0° 48.0
2026-09-20 20:00 CDT 65.0°F 63.0°F +2.0° 48.0
2026-09-20 19:00 CDT 65.0°F 63.0°F +2.0° 48.0
2026-09-20 18:00 CDT 66.0°F 65.0°F +1.0° 48.0
2026-09-20 17:00 CDT 66.0°F 65.0°F +1.0° 48.0
2026-09-20 16:00 CDT 66.0°F 66.0°F +0.0° 48.0
2026-09-20 15:00 CDT 66.0°F 67.0°F -1.0° 48.0
2026-09-20 14:00 CDT 66.0°F 67.0°F -1.0° 48.0
2026-09-20 13:00 CDT 66.0°F 68.0°F -2.0° 48.0
2026-09-20 12:00 CDT 66.0°F 66.0°F +0.0° 48.0
2026-09-20 11:00 CDT 66.0°F 66.0°F +0.0° 48.0
2026-09-20 10:00 CDT 66.0°F 66.0°F +0.0° 48.0
2026-09-20 09:00 CDT 66.0°F 65.0°F +1.0° 48.0
2026-09-20 08:00 CDT 65.0°F 64.0°F +1.0° 48.0
2026-09-20 07:00 CDT 65.0°F 63.0°F +2.0° 48.0
2026-09-20 06:00 CDT 66.0°F 63.0°F +3.0° 48.0
2026-09-20 05:00 CDT 66.0°F 63.0°F +3.0° 48.0
2026-09-20 04:00 CDT 67.0°F 63.0°F +4.0° 48.0
2026-09-20 03:00 CDT 68.0°F 63.0°F +5.0° 48.0
2026-09-20 02:00 CDT 68.0°F 64.0°F +4.0° 48.0
2026-09-20 01:00 CDT 69.0°F 65.0°F +4.0° 48.0
2026-09-20 00:00 CDT 70.0°F 66.0°F +4.0° 48.0
2026-09-19 23:00 CDT 71.0°F 68.0°F +3.0° 48.0
2026-09-19 22:00 CDT 72.0°F 68.0°F +4.0° 48.0
2026-09-19 21:00 CDT 74.0°F 69.0°F +5.0° 48.0
2026-09-19 20:00 CDT 75.0°F 71.0°F +4.0° 48.0
2026-09-19 19:00 CDT 77.0°F 71.0°F +6.0° 48.0
2026-09-19 18:00 CDT 78.0°F 75.0°F +3.0° 48.0
2026-09-19 17:00 CDT 80.0°F 79.0°F +1.0° 48.0
2026-09-19 16:00 CDT 81.0°F 79.0°F +2.0° 48.0
2026-09-19 15:00 CDT 80.0°F 83.0°F -3.0° 48.0
2026-09-19 14:00 CDT 80.0°F 82.0°F -2.0° 48.0
2026-09-19 13:00 CDT 78.0°F 82.0°F -4.0° 48.0
2026-09-19 12:00 CDT 77.0°F 78.0°F -1.0° 48.0
2026-09-19 11:00 CDT 76.0°F 77.0°F -1.0° 48.0
2026-09-19 10:00 CDT 74.0°F 75.0°F -1.0° 48.0
2026-09-19 09:00 CDT 73.0°F 72.0°F +1.0° 48.0
2026-09-19 08:00 CDT 72.0°F 72.0°F +0.0° 48.0
2026-09-19 07:00 CDT 71.0°F 74.0°F -3.0° 48.0
2026-09-19 06:00 CDT 72.0°F 73.0°F -1.0° 48.0
2026-09-19 05:00 CDT 72.0°F 76.0°F -4.0° 48.0
2026-09-19 04:00 CDT 72.0°F 76.0°F -4.0° 48.0
2026-09-19 03:00 CDT 73.0°F 77.0°F -4.0° 48.0
2026-09-19 02:00 CDT 74.0°F 78.0°F -4.0° 48.0
2026-09-19 01:00 CDT 74.0°F 76.0°F -2.0° 48.0
2026-09-19 00:00 CDT 75.0°F 78.0°F -3.0° 48.0
2026-09-18 23:00 CDT 76.0°F 77.0°F -1.0° 48.0
2026-09-18 22:00 CDT 76.0°F 76.0°F +0.0° 48.0
2026-09-18 21:00 CDT 77.0°F 75.0°F +2.0° 48.0
2026-09-18 20:00 CDT 78.0°F 75.0°F +3.0° 48.0
2026-09-18 19:00 CDT 79.0°F 76.0°F +3.0° 48.0
2026-09-18 18:00 CDT 80.0°F 76.0°F +4.0° 48.0
2026-09-18 17:00 CDT 82.0°F 77.0°F +5.0° 48.0
2026-09-18 16:00 CDT 83.0°F 75.0°F +8.0° 48.0
2026-09-18 15:00 CDT 81.0°F 73.0°F +8.0° 48.0
2026-09-18 14:00 CDT 79.0°F 71.0°F +8.0° 48.0
2026-09-18 13:00 CDT 77.0°F 69.0°F +8.0° 48.0
2026-09-18 12:00 CDT 75.0°F 68.0°F +7.0° 48.0
2026-09-18 11:00 CDT 73.0°F 67.0°F +6.0° 48.0
2026-09-18 10:00 CDT 71.0°F 66.0°F +5.0° 48.0
2026-09-18 09:00 CDT 70.0°F 65.0°F +5.0° 48.0
2026-09-18 08:00 CDT 68.0°F 65.0°F +3.0° 48.0
2026-09-18 07:00 CDT 67.0°F 65.0°F +2.0° 48.0
2026-09-18 06:00 CDT 68.0°F 65.0°F +3.0° 48.0
2026-09-18 05:00 CDT 68.0°F 65.0°F +3.0° 48.0
2026-09-18 04:00 CDT 69.0°F 66.0°F +3.0° 48.0
2026-09-18 03:00 CDT 69.0°F 66.0°F +3.0° 48.0
2026-09-18 02:00 CDT 69.0°F 67.0°F +2.0° 48.0
2026-09-18 01:00 CDT 70.0°F 68.0°F +2.0° 48.0
2026-09-18 00:00 CDT 70.0°F 69.0°F +1.0° 48.0
2026-09-17 23:00 CDT 71.0°F 70.0°F +1.0° 48.0
2026-09-17 22:00 CDT 72.0°F 71.0°F +1.0° 48.0
2026-09-17 21:00 CDT 73.0°F 73.0°F +0.0° 48.0
2026-09-17 20:00 CDT 75.0°F 75.0°F +0.0° 48.0
2026-09-17 19:00 CDT 77.0°F 76.0°F +1.0° 48.0
2026-09-17 18:00 CDT 77.0°F 78.0°F -1.0° 48.0
2026-09-17 17:00 CDT 76.0°F 78.0°F -2.0° 48.0
2026-09-17 16:00 CDT 76.0°F 77.0°F -1.0° 48.0
2026-09-17 15:00 CDT 75.0°F 77.0°F -2.0° 48.0
2026-09-17 14:00 CDT 74.0°F 76.0°F -2.0° 48.0
2026-09-17 13:00 CDT 76.0°F 76.0°F +0.0° 48.0
2026-09-17 12:00 CDT 74.0°F 75.0°F -1.0° 48.0
2026-09-17 11:00 CDT 72.0°F 74.0°F -2.0° 48.0
2026-09-17 10:00 CDT 70.0°F 71.0°F -1.0° 48.0
2026-09-17 09:00 CDT 68.0°F 69.0°F -1.0° 48.0
2026-09-17 08:00 CDT 67.0°F 68.0°F -1.0° 48.0
2026-09-17 07:00 CDT 65.0°F 68.0°F -3.0° 48.0
2026-09-17 06:00 CDT 66.0°F 68.0°F -2.0° 48.0
2026-09-17 05:00 CDT 66.0°F 68.0°F -2.0° 48.0
2026-09-17 04:00 CDT 67.0°F 68.0°F -1.0° 48.0
2026-09-17 03:00 CDT 69.0°F 68.0°F +1.0° 48.0
2026-09-17 02:00 CDT 69.0°F 68.0°F +1.0° 48.0
2026-09-17 01:00 CDT 70.0°F 68.0°F +2.0° 48.0
2026-09-17 00:00 CDT 70.0°F 68.0°F +2.0° 48.0
2026-09-16 23:00 CDT 70.0°F 68.0°F +2.0° 48.0
2026-09-16 22:00 CDT 70.0°F 67.0°F +3.0° 48.0
2026-09-16 21:00 CDT 71.0°F 68.0°F +3.0° 48.0
2026-09-16 20:00 CDT 71.0°F 68.0°F +3.0° 48.0
2026-09-16 19:00 CDT 72.0°F 68.0°F +4.0° 48.0
2026-09-16 18:00 CDT 72.0°F 68.0°F +4.0° 48.0
2026-09-16 17:00 CDT 72.0°F 68.0°F +4.0° 48.0
2026-09-16 16:00 CDT 72.0°F 67.0°F +5.0° 48.0
2026-09-16 15:00 CDT 70.0°F 67.0°F +3.0° 48.0
2026-09-16 14:00 CDT 69.0°F 64.0°F +5.0° 48.0
2026-09-16 13:00 CDT 67.0°F 64.0°F +3.0° 48.0
2026-09-16 12:00 CDT 66.0°F 66.0°F +0.0° 48.0
2026-09-16 11:00 CDT 64.0°F 66.0°F -2.0° 48.0
2026-09-16 10:00 CDT 63.0°F 64.0°F -1.0° 48.0
2026-09-16 09:00 CDT 62.0°F 63.0°F -1.0° 48.0
2026-09-16 08:00 CDT 61.0°F 62.0°F -1.0° 48.0
2026-09-16 07:00 CDT 60.0°F 62.0°F -2.0° 48.0
2026-09-16 06:00 CDT 61.0°F 62.0°F -1.0° 48.0
2026-09-16 05:00 CDT 62.0°F 62.0°F +0.0° 48.0
2026-09-16 04:00 CDT 62.0°F 62.0°F +0.0° 48.0
2026-09-16 03:00 CDT 62.0°F 62.0°F +0.0° 48.0
2026-09-16 02:00 CDT 62.0°F 62.0°F +0.0° 48.0
2026-09-16 01:00 CDT 63.0°F 63.0°F +0.0° 48.0
2026-09-16 00:00 CDT 63.0°F 63.0°F +0.0° 48.0
2026-09-15 23:00 CDT 64.0°F 62.0°F +2.0° 48.0
2026-09-15 22:00 CDT 64.0°F 63.0°F +1.0° 48.0
2026-09-15 21:00 CDT 65.0°F 63.0°F +2.0° 48.0
2026-09-15 20:00 CDT 67.0°F 64.0°F +3.0° 48.0
2026-09-15 19:00 CDT 68.0°F 64.0°F +4.0° 48.0
2026-09-15 18:00 CDT 69.0°F 64.0°F +5.0° 48.0
2026-09-15 17:00 CDT 70.0°F 65.0°F +5.0° 48.0
2026-09-15 16:00 CDT 72.0°F 65.0°F +7.0° 48.0
2026-09-15 15:00 CDT 71.0°F 65.0°F +6.0° 48.0
2026-09-15 14:00 CDT 69.0°F 65.0°F +4.0° 48.0
2026-09-15 13:00 CDT 68.0°F 66.0°F +2.0° 48.0
2026-09-15 12:00 CDT 68.0°F 65.0°F +3.0° 48.0
2026-09-15 11:00 CDT 68.0°F 65.0°F +3.0° 48.0
2026-09-15 10:00 CDT 68.0°F 69.0°F -1.0° 48.0
2026-09-15 09:00 CDT 68.0°F 68.0°F +0.0° 48.0
2026-09-15 08:00 CDT 68.0°F 69.0°F -1.0° 48.0
2026-09-15 07:00 CDT 68.0°F 68.0°F +0.0° 48.0
2026-09-15 06:00 CDT 69.0°F 68.0°F +1.0° 48.0
2026-09-15 05:00 CDT 69.0°F 68.0°F +1.0° 48.0
2026-09-15 04:00 CDT 70.0°F 68.0°F +2.0° 48.0
2026-09-15 03:00 CDT 72.0°F 68.0°F +4.0° 48.0
2026-09-15 02:00 CDT 73.0°F 71.0°F +2.0° 48.0
2026-09-15 01:00 CDT 74.0°F 70.0°F +4.0° 48.0
2026-09-15 00:00 CDT 75.0°F 72.0°F +3.0° 48.0
2026-09-14 23:00 CDT 76.0°F 72.0°F +4.0° 48.0
2026-09-14 22:00 CDT 77.0°F 71.0°F +6.0° 48.0
2026-09-14 21:00 CDT 77.0°F 75.0°F +2.0° 48.0
2026-09-14 20:00 CDT 78.0°F 74.0°F +4.0° 48.0
2026-09-14 19:00 CDT 79.0°F 75.0°F +4.0° 48.0

Daily high / low

Earliest forecast that already covers the local date (morning low and afternoon high), not the first overnight hour at the edge of the hourly window, vs finalized calendar-day max/min (only after the local day ends). Click a date to see how the high/low forecast evolved toward the actual.

Local date Fcst high Act high High err Fcst low Act low Low err
2026-09-21 62.0°F 61.0°F +1.0° 57.0°F 58.0°F -1.0°
2026-09-20 70.0°F 68.0°F +2.0° 65.0°F 61.0°F +4.0°
2026-09-19 81.0°F 83.0°F -2.0° 71.0°F 68.0°F +3.0°
2026-09-18 83.0°F 77.0°F +6.0° 68.0°F 65.0°F +3.0°
2026-09-17 77.0°F 78.0°F -1.0° 66.0°F 68.0°F -2.0°
2026-09-16 72.0°F 68.0°F +4.0° 62.0°F 62.0°F +0.0°
2026-09-15 72.0°F 72.0°F +0.0° 68.0°F 62.0°F +6.0°
2026-09-14 80.0°F 77.0°F +3.0° 59.0°F 58.0°F +1.0°
2026-09-13 70.0°F 64.0°F +6.0° 61.0°F 56.0°F +5.0°
2026-09-12 79.0°F 77.0°F +2.0° 68.0°F 65.0°F +3.0°
2026-09-11 82.0°F 83.0°F -1.0° 62.0°F 60.0°F +2.0°
2026-09-10 80.0°F 81.0°F -1.0° 63.0°F 62.0°F +1.0°
2026-09-09 82.0°F 83.0°F -1.0° 71.0°F 69.0°F +2.0°
2026-09-08 93.0°F 93.0°F +0.0° 70.0°F 70.0°F +0.0°