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) |
|---|---|---|---|---|
| Honolulu HI | 172 | 1.37 | -0.12 | 48.0 |
| Richmond VA | 172 | 1.71 | -0.40 | 48.0 |
| Raleigh NC | 172 | 1.92 | -1.02 | 48.0 |
| Annapolis MD | 172 | 2.00 | 0.03 | 48.0 |
| Boise ID | 172 | 2.03 | 0.20 | 48.0 |
| Saint Paul MN | 172 | 2.17 | 0.43 | 48.0 |
| Denver CO | 172 | 2.32 | 0.35 | 48.0 |
| Lansing MI | 172 | 2.36 | -0.27 | 48.0 |
| Trenton NJ | 172 | 2.37 | 1.24 | 48.0 |
| Albany NY | 172 | 2.43 | 1.30 | 48.0 |
| Salem OR | 172 | 2.43 | 1.74 | 48.0 |
| Jackson MS | 172 | 2.46 | -0.33 | 48.0 |
| Phoenix AZ | 172 | 2.52 | -0.88 | 48.0 |
| Harrisburg PA | 172 | 2.58 | 1.47 | 48.0 |
| Providence RI | 172 | 2.60 | -0.28 | 48.0 |
| Juneau AK | 172 | 2.67 | 1.82 | 48.0 |
| Columbus OH | 172 | 2.67 | 1.34 | 48.0 |
| Dover DE | 172 | 2.71 | -1.14 | 48.0 |
| Columbia SC | 172 | 2.73 | -0.56 | 48.0 |
| Hartford CT | 172 | 2.74 | 0.86 | 48.0 |
| Austin TX | 172 | 2.74 | 0.24 | 48.0 |
| Indianapolis IN | 172 | 2.76 | 0.87 | 48.0 |
| Sacramento CA | 172 | 2.81 | 2.31 | 48.0 |
| Little Rock AR | 172 | 2.86 | -1.71 | 48.0 |
| Augusta ME | 172 | 2.87 | -0.99 | 48.0 |
| Baton Rouge LA | 172 | 2.92 | 1.25 | 48.0 |
| Madison WI | 172 | 2.95 | -0.05 | 48.0 |
| Topeka KS | 172 | 2.96 | -0.28 | 48.0 |
| Bismarck ND | 172 | 2.96 | 1.23 | 48.0 |
| Concord NH | 172 | 2.98 | 0.25 | 48.0 |
| Des Moines IA | 172 | 3.01 | -2.40 | 48.0 |
| Santa Fe NM | 172 | 3.03 | -2.09 | 48.0 |
| Atlanta GA | 172 | 3.10 | 2.13 | 48.0 |
| Salt Lake City UT | 172 | 3.20 | 0.76 | 48.0 |
| Montgomery AL | 172 | 3.26 | 0.49 | 48.0 |
| Tallahassee FL | 172 | 3.28 | -2.31 | 48.0 |
| Boston MA | 172 | 3.32 | -1.70 | 48.0 |
| Helena MT | 172 | 3.35 | 0.37 | 48.0 |
| Cheyenne WY | 172 | 3.42 | -1.79 | 48.0 |
| Frankfort KY | 172 | 3.43 | 1.80 | 48.0 |
| Olympia WA | 172 | 3.51 | 2.10 | 48.0 |
| Carson City NV | 172 | 3.55 | 0.65 | 48.0 |
| Nashville TN | 172 | 3.64 | 3.00 | 48.0 |
| Oklahoma City OK | 172 | 3.69 | 2.27 | 48.0 |
| Charleston WV | 172 | 3.69 | 3.44 | 48.0 |
| Jefferson City MO | 172 | 3.70 | 1.95 | 48.0 |
| Montpelier VT | 172 | 3.80 | 0.97 | 48.0 |
| Springfield IL | 172 | 3.93 | 2.87 | 48.0 |
| Lincoln NE | 172 | 4.06 | -0.21 | 48.0 |
| Pierre SD | 172 | 4.53 | 3.55 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-10-12 22:00 CDT | Montgomery AL | 69.0°F | 69.0°F | +0.0° | 48.0 |
| 2026-10-12 19:00 AKDT | Juneau AK | 45.0°F | 46.0°F | -1.0° | 48.0 |
| 2026-10-12 20:00 MST | Phoenix AZ | 75.0°F | 73.0°F | +2.0° | 48.0 |
| 2026-10-12 22:00 CDT | Little Rock AR | 74.0°F | 72.0°F | +2.0° | 48.0 |
| 2026-10-12 20:00 PDT | Sacramento CA | 63.0°F | 62.0°F | +1.0° | 48.0 |
| 2026-10-12 21:00 MDT | Denver CO | 67.0°F | 70.0°F | -3.0° | 48.0 |
| 2026-10-12 23:00 EDT | Hartford CT | 57.0°F | 58.0°F | -1.0° | 48.0 |
| 2026-10-12 23:00 EDT | Dover DE | 62.0°F | 64.0°F | -2.0° | 48.0 |
| 2026-10-12 23:00 EDT | Tallahassee FL | 70.0°F | 70.0°F | +0.0° | 48.0 |
| 2026-10-12 23:00 EDT | Atlanta GA | 67.0°F | 63.0°F | +4.0° | 48.0 |
| 2026-10-12 17:00 HST | Honolulu HI | 83.0°F | 84.0°F | -1.0° | 48.0 |
| 2026-10-12 21:00 MDT | Boise ID | 49.0°F | 49.0°F | +0.0° | 48.0 |
| 2026-10-12 22:00 CDT | Springfield IL | 77.0°F | 78.0°F | -1.0° | 48.0 |
| 2026-10-12 23:00 EDT | Indianapolis IN | 73.0°F | 74.0°F | -1.0° | 48.0 |
| 2026-10-12 22:00 CDT | Des Moines IA | 77.0°F | 69.0°F | +8.0° | 48.0 |
| 2026-10-12 22:00 CDT | Topeka KS | 80.0°F | 80.0°F | +0.0° | 48.0 |
| 2026-10-12 23:00 EDT | Frankfort KY | 65.0°F | 68.0°F | -3.0° | 48.0 |
| 2026-10-12 22:00 CDT | Baton Rouge LA | 76.0°F | 74.0°F | +2.0° | 48.0 |
| 2026-10-12 23:00 EDT | Augusta ME | 52.0°F | 51.0°F | +1.0° | 48.0 |
| 2026-10-12 23:00 EDT | Annapolis MD | 63.0°F | 62.0°F | +1.0° | 48.0 |
| 2026-10-12 23:00 EDT | Boston MA | 57.0°F | 63.0°F | -6.0° | 48.0 |
| 2026-10-12 23:00 EDT | Lansing MI | 68.0°F | 74.0°F | -6.0° | 48.0 |
| 2026-10-12 22:00 CDT | Saint Paul MN | 64.0°F | 58.0°F | +6.0° | 48.0 |
| 2026-10-12 22:00 CDT | Jackson MS | 73.0°F | 72.0°F | +1.0° | 48.0 |
| 2026-10-12 22:00 CDT | Jefferson City MO | 77.0°F | 74.0°F | +3.0° | 48.0 |
| 2026-10-12 21:00 MDT | Helena MT | 32.0°F | 33.0°F | -1.0° | 48.0 |
| 2026-10-12 22:00 CDT | Lincoln NE | 74.0°F | 60.0°F | +14.0° | 48.0 |
| 2026-10-12 20:00 PDT | Carson City NV | 49.0°F | 48.0°F | +1.0° | 48.0 |
| 2026-10-12 23:00 EDT | Concord NH | 54.0°F | 60.0°F | -6.0° | 48.0 |
| 2026-10-12 23:00 EDT | Trenton NJ | 60.0°F | 61.0°F | -1.0° | 48.0 |
| 2026-10-12 21:00 MDT | Santa Fe NM | 59.0°F | 59.0°F | +0.0° | 48.0 |
| 2026-10-12 23:00 EDT | Albany NY | 57.0°F | 60.0°F | -3.0° | 48.0 |
| 2026-10-12 23:00 EDT | Raleigh NC | 66.0°F | 66.0°F | +0.0° | 48.0 |
| 2026-10-12 22:00 CDT | Bismarck ND | 45.0°F | 43.0°F | +2.0° | 48.0 |
| 2026-10-12 23:00 EDT | Columbus OH | 67.0°F | 66.0°F | +1.0° | 48.0 |
| 2026-10-12 22:00 CDT | Oklahoma City OK | 82.0°F | 77.0°F | +5.0° | 48.0 |
| 2026-10-12 20:00 PDT | Salem OR | 54.0°F | 52.0°F | +2.0° | 48.0 |
| 2026-10-12 23:00 EDT | Harrisburg PA | 61.0°F | 62.0°F | -1.0° | 48.0 |
| 2026-10-12 23:00 EDT | Providence RI | 56.0°F | 63.0°F | -7.0° | 48.0 |
| 2026-10-12 23:00 EDT | Columbia SC | 68.0°F | 66.0°F | +2.0° | 48.0 |