Tracking Xweather forecasts vs actuals for 50 US state capitals
Mean absolute error (°F) using the earliest stored forecast for each hour vs the observed temperature. Lower is better. Ranked best → worst.
| Capital | Samples | MAE °F | Bias °F | Avg lead (h) |
|---|---|---|---|---|
| Little Rock AR | 177 | 1.13 | 0.34 | 48.0 |
| Indianapolis IN | 177 | 1.48 | -0.17 | 48.0 |
| Sacramento CA | 177 | 1.65 | -0.17 | 48.0 |
| Honolulu HI | 177 | 1.71 | -0.94 | 48.0 |
| Jefferson City MO | 177 | 1.73 | 0.41 | 48.0 |
| Albany NY | 177 | 1.86 | -0.68 | 48.0 |
| Nashville TN | 177 | 1.90 | 0.28 | 48.0 |
| Columbus OH | 177 | 1.95 | 0.72 | 48.0 |
| Harrisburg PA | 177 | 2.02 | -0.14 | 48.0 |
| Austin TX | 177 | 2.08 | -0.12 | 48.0 |
| Raleigh NC | 177 | 2.09 | 0.00 | 48.0 |
| Salem OR | 177 | 2.10 | 0.51 | 48.0 |
| Columbia SC | 177 | 2.11 | 0.34 | 48.0 |
| Annapolis MD | 177 | 2.14 | -0.02 | 48.0 |
| Trenton NJ | 177 | 2.16 | -1.40 | 48.0 |
| Cheyenne WY | 177 | 2.21 | -0.47 | 48.0 |
| Hartford CT | 177 | 2.25 | -1.21 | 48.0 |
| Lansing MI | 177 | 2.29 | 1.47 | 48.0 |
| Charleston WV | 177 | 2.34 | 1.75 | 48.0 |
| Augusta ME | 177 | 2.37 | -0.05 | 48.0 |
| Oklahoma City OK | 177 | 2.38 | 1.28 | 48.0 |
| Jackson MS | 177 | 2.40 | 1.60 | 48.0 |
| Providence RI | 177 | 2.42 | -2.23 | 48.0 |
| Dover DE | 177 | 2.46 | -1.19 | 48.0 |
| Richmond VA | 177 | 2.48 | 0.88 | 48.0 |
| Topeka KS | 177 | 2.52 | 1.75 | 48.0 |
| Frankfort KY | 177 | 2.53 | 1.34 | 48.0 |
| Saint Paul MN | 177 | 2.54 | 0.21 | 48.0 |
| Lincoln NE | 177 | 2.56 | 1.94 | 48.0 |
| Atlanta GA | 177 | 2.66 | 1.11 | 48.0 |
| Madison WI | 177 | 2.80 | 1.62 | 48.0 |
| Boston MA | 177 | 2.88 | 0.25 | 48.0 |
| Baton Rouge LA | 177 | 2.89 | 1.30 | 48.0 |
| Des Moines IA | 177 | 2.91 | 1.52 | 48.0 |
| Juneau AK | 177 | 2.95 | -0.24 | 48.0 |
| Helena MT | 177 | 3.02 | -1.39 | 48.0 |
| Concord NH | 177 | 3.08 | -0.37 | 48.0 |
| Bismarck ND | 177 | 3.08 | 1.29 | 48.0 |
| Carson City NV | 177 | 3.12 | -1.42 | 48.0 |
| Tallahassee FL | 177 | 3.13 | -1.82 | 48.0 |
| Montpelier VT | 177 | 3.13 | 0.54 | 48.0 |
| Phoenix AZ | 177 | 3.18 | -2.82 | 48.0 |
| Denver CO | 177 | 3.28 | 0.91 | 48.0 |
| Olympia WA | 177 | 3.29 | -0.25 | 48.0 |
| Montgomery AL | 177 | 3.30 | 0.49 | 48.0 |
| Springfield IL | 177 | 3.49 | 3.34 | 48.0 |
| Santa Fe NM | 177 | 3.60 | -2.60 | 48.0 |
| Boise ID | 177 | 3.71 | 1.27 | 48.0 |
| Pierre SD | 177 | 3.91 | 1.86 | 48.0 |
| Salt Lake City UT | 177 | 3.92 | -3.31 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-09-10 03:00 CDT | Montgomery AL | 76.0°F | 81.0°F | -5.0° | 48.0 |
| 2026-09-10 00:00 AKDT | Juneau AK | 51.0°F | 44.0°F | +7.0° | 48.0 |
| 2026-09-10 01:00 MST | Phoenix AZ | 92.0°F | 95.0°F | -3.0° | 48.0 |
| 2026-09-10 03:00 CDT | Little Rock AR | 80.0°F | 83.0°F | -3.0° | 48.0 |
| 2026-09-10 01:00 PDT | Sacramento CA | 76.0°F | 73.0°F | +3.0° | 48.0 |
| 2026-09-10 02:00 MDT | Denver CO | 64.0°F | 58.0°F | +6.0° | 48.0 |
| 2026-09-10 04:00 EDT | Hartford CT | 71.0°F | 74.0°F | -3.0° | 48.0 |
| 2026-09-10 04:00 EDT | Dover DE | 72.0°F | 75.0°F | -3.0° | 48.0 |
| 2026-09-10 04:00 EDT | Tallahassee FL | 76.0°F | 77.0°F | -1.0° | 48.0 |
| 2026-09-10 04:00 EDT | Atlanta GA | 73.0°F | 70.0°F | +3.0° | 48.0 |
| 2026-09-09 22:00 HST | Honolulu HI | 79.0°F | 82.0°F | -3.0° | 48.0 |
| 2026-09-10 02:00 MDT | Boise ID | 58.0°F | 61.0°F | -3.0° | 48.0 |
| 2026-09-10 03:00 CDT | Springfield IL | 72.0°F | 69.0°F | +3.0° | 48.0 |
| 2026-09-10 04:00 EDT | Indianapolis IN | 73.0°F | 73.0°F | +0.0° | 48.0 |
| 2026-09-10 03:00 CDT | Des Moines IA | 66.0°F | 67.0°F | -1.0° | 48.0 |
| 2026-09-10 03:00 CDT | Topeka KS | 71.0°F | 73.0°F | -2.0° | 48.0 |
| 2026-09-10 04:00 EDT | Frankfort KY | 74.0°F | 76.0°F | -2.0° | 48.0 |
| 2026-09-10 03:00 CDT | Baton Rouge LA | 77.0°F | 75.0°F | +2.0° | 48.0 |
| 2026-09-10 04:00 EDT | Augusta ME | 65.0°F | 67.0°F | -2.0° | 48.0 |
| 2026-09-10 04:00 EDT | Annapolis MD | 74.0°F | 75.0°F | -1.0° | 48.0 |
| 2026-09-10 04:00 EDT | Boston MA | 72.0°F | 74.0°F | -2.0° | 48.0 |
| 2026-09-10 04:00 EDT | Lansing MI | 65.0°F | 67.0°F | -2.0° | 48.0 |
| 2026-09-10 03:00 CDT | Saint Paul MN | 60.0°F | 61.0°F | -1.0° | 48.0 |
| 2026-09-10 03:00 CDT | Jackson MS | 76.0°F | 75.0°F | +1.0° | 48.0 |
| 2026-09-10 03:00 CDT | Jefferson City MO | 72.0°F | 70.0°F | +2.0° | 48.0 |
| 2026-09-10 02:00 MDT | Helena MT | 55.0°F | 58.0°F | -3.0° | 48.0 |
| 2026-09-10 03:00 CDT | Lincoln NE | 64.0°F | 66.0°F | -2.0° | 48.0 |
| 2026-09-10 01:00 PDT | Carson City NV | 68.0°F | 64.0°F | +4.0° | 48.0 |
| 2026-09-10 04:00 EDT | Concord NH | 69.0°F | 71.0°F | -2.0° | 48.0 |
| 2026-09-10 04:00 EDT | Trenton NJ | 73.0°F | 73.0°F | +0.0° | 48.0 |
| 2026-09-10 02:00 MDT | Santa Fe NM | 63.0°F | 65.0°F | -2.0° | 48.0 |
| 2026-09-10 04:00 EDT | Albany NY | 70.0°F | 70.0°F | +0.0° | 48.0 |
| 2026-09-10 04:00 EDT | Raleigh NC | 70.0°F | 73.0°F | -3.0° | 48.0 |
| 2026-09-10 03:00 CDT | Bismarck ND | 55.0°F | 54.0°F | +1.0° | 48.0 |
| 2026-09-10 04:00 EDT | Columbus OH | 73.0°F | 72.0°F | +1.0° | 48.0 |
| 2026-09-10 03:00 CDT | Oklahoma City OK | 82.0°F | 83.0°F | -1.0° | 48.0 |
| 2026-09-10 01:00 PDT | Salem OR | 62.0°F | 60.0°F | +2.0° | 48.0 |
| 2026-09-10 04:00 EDT | Harrisburg PA | 73.0°F | 73.0°F | +0.0° | 48.0 |
| 2026-09-10 04:00 EDT | Providence RI | 70.0°F | 73.0°F | -3.0° | 48.0 |
| 2026-09-10 04:00 EDT | Columbia SC | 72.0°F | 75.0°F | -3.0° | 48.0 |