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) |
|---|---|---|---|---|
| Columbus OH | 1 | 0.00 | 0.00 | 1.0 |
| Nashville TN | 1 | 0.00 | 0.00 | 1.0 |
| Montpelier VT | 1 | 0.00 | 0.00 | 1.0 |
| Richmond VA | 1 | 0.00 | 0.00 | 1.0 |
| Charleston WV | 1 | 0.00 | 0.00 | 1.0 |
| Cheyenne WY | 1 | 0.00 | 0.00 | 1.0 |
| Sacramento CA | 2 | 0.50 | -0.50 | 1.5 |
| Tallahassee FL | 2 | 0.50 | 0.50 | 1.5 |
| Indianapolis IN | 2 | 0.50 | -0.50 | 1.5 |
| Des Moines IA | 2 | 0.50 | -0.50 | 1.5 |
| Frankfort KY | 2 | 0.50 | 0.50 | 1.5 |
| Baton Rouge LA | 2 | 0.50 | 0.50 | 1.5 |
| Augusta ME | 2 | 0.50 | 0.50 | 1.5 |
| Boston MA | 2 | 0.50 | 0.50 | 1.5 |
| Jackson MS | 2 | 0.50 | 0.50 | 1.5 |
| Raleigh NC | 2 | 0.50 | -0.50 | 1.5 |
| Montgomery AL | 2 | 1.00 | 0.00 | 1.5 |
| Little Rock AR | 2 | 1.00 | -1.00 | 1.5 |
| Honolulu HI | 2 | 1.00 | -1.00 | 1.5 |
| Annapolis MD | 2 | 1.00 | 1.00 | 1.5 |
| Lansing MI | 2 | 1.00 | 1.00 | 1.5 |
| Saint Paul MN | 2 | 1.00 | 1.00 | 1.5 |
| Jefferson City MO | 2 | 1.00 | 1.00 | 1.5 |
| Lincoln NE | 2 | 1.00 | 1.00 | 1.5 |
| Trenton NJ | 2 | 1.00 | -1.00 | 1.5 |
| Providence RI | 1 | 1.00 | -1.00 | 1.0 |
| Columbia SC | 1 | 1.00 | -1.00 | 1.0 |
| Pierre SD | 1 | 1.00 | 1.00 | 1.0 |
| Salt Lake City UT | 1 | 1.00 | 1.00 | 1.0 |
| Madison WI | 1 | 1.00 | -1.00 | 1.0 |
| Hartford CT | 2 | 1.50 | -1.50 | 1.5 |
| Boise ID | 2 | 1.50 | 1.50 | 1.5 |
| Topeka KS | 2 | 1.50 | 1.50 | 1.5 |
| Santa Fe NM | 2 | 1.50 | -1.50 | 1.5 |
| Bismarck ND | 2 | 1.50 | 1.50 | 1.5 |
| Dover DE | 2 | 2.00 | -2.00 | 1.5 |
| Springfield IL | 2 | 2.00 | 2.00 | 1.5 |
| Helena MT | 2 | 2.00 | -2.00 | 1.5 |
| Concord NH | 2 | 2.00 | -2.00 | 1.5 |
| Albany NY | 2 | 2.00 | -2.00 | 1.5 |
| Salem OR | 1 | 2.00 | 2.00 | 1.0 |
| Harrisburg PA | 1 | 2.00 | -2.00 | 1.0 |
| Austin TX | 1 | 2.00 | 2.00 | 1.0 |
| Atlanta GA | 2 | 2.50 | -2.50 | 1.5 |
| Juneau AK | 2 | 3.00 | 3.00 | 1.5 |
| Oklahoma City OK | 1 | 3.00 | 3.00 | 1.0 |
| Olympia WA | 1 | 4.00 | 4.00 | 1.0 |
| Denver CO | 2 | 5.00 | 5.00 | 1.5 |
| Carson City NV | 2 | 8.50 | 8.50 | 1.5 |
| Phoenix AZ | 2 | 12.00 | 12.00 | 1.5 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (UTC) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-07-14 08:00 UTC | Montgomery AL | 73.0°F | 74.0°F | -1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Juneau AK | 54.0°F | 52.0°F | +2.0° | 2.0 |
| 2026-07-14 08:00 UTC | Phoenix AZ | 93.0°F | 82.0°F | +11.0° | 2.0 |
| 2026-07-14 08:00 UTC | Little Rock AR | 74.0°F | 75.0°F | -1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Sacramento CA | 73.0°F | 73.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Denver CO | 79.0°F | 75.0°F | +4.0° | 2.0 |
| 2026-07-14 08:00 UTC | Hartford CT | 69.0°F | 71.0°F | -2.0° | 2.0 |
| 2026-07-14 08:00 UTC | Dover DE | 65.0°F | 67.0°F | -2.0° | 2.0 |
| 2026-07-14 08:00 UTC | Tallahassee FL | 73.0°F | 73.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Atlanta GA | 71.0°F | 74.0°F | -3.0° | 2.0 |
| 2026-07-14 08:00 UTC | Honolulu HI | 77.0°F | 78.0°F | -1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Boise ID | 81.0°F | 79.0°F | +2.0° | 2.0 |
| 2026-07-14 08:00 UTC | Springfield IL | 69.0°F | 67.0°F | +2.0° | 2.0 |
| 2026-07-14 08:00 UTC | Indianapolis IN | 70.0°F | 71.0°F | -1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Des Moines IA | 72.0°F | 73.0°F | -1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Topeka KS | 69.0°F | 68.0°F | +1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Frankfort KY | 70.0°F | 69.0°F | +1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Baton Rouge LA | 75.0°F | 75.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Augusta ME | 68.0°F | 67.0°F | +1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Annapolis MD | 71.0°F | 70.0°F | +1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Boston MA | 72.0°F | 72.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Lansing MI | 71.0°F | 70.0°F | +1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Saint Paul MN | 77.0°F | 76.0°F | +1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Jackson MS | 74.0°F | 74.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Jefferson City MO | 68.0°F | 67.0°F | +1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Helena MT | 72.0°F | 74.0°F | -2.0° | 2.0 |
| 2026-07-14 08:00 UTC | Lincoln NE | 71.0°F | 71.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Carson City NV | 72.0°F | 64.0°F | +8.0° | 2.0 |
| 2026-07-14 08:00 UTC | Concord NH | 67.0°F | 68.0°F | -1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Trenton NJ | 67.0°F | 67.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Santa Fe NM | 68.0°F | 69.0°F | -1.0° | 2.0 |
| 2026-07-14 08:00 UTC | Albany NY | 66.0°F | 69.0°F | -3.0° | 2.0 |
| 2026-07-14 08:00 UTC | Raleigh NC | 71.0°F | 71.0°F | +0.0° | 2.0 |
| 2026-07-14 08:00 UTC | Bismarck ND | 79.0°F | 77.0°F | +2.0° | 2.0 |
| 2026-07-14 08:00 UTC | Columbus OH | 72.0°F | 72.0°F | +0.0° | 1.0 |
| 2026-07-14 08:00 UTC | Oklahoma City OK | 74.0°F | 71.0°F | +3.0° | 1.0 |
| 2026-07-14 08:00 UTC | Salem OR | 63.0°F | 61.0°F | +2.0° | 1.0 |
| 2026-07-14 08:00 UTC | Harrisburg PA | 68.0°F | 70.0°F | -2.0° | 1.0 |
| 2026-07-14 08:00 UTC | Providence RI | 69.0°F | 70.0°F | -1.0° | 1.0 |
| 2026-07-14 08:00 UTC | Columbia SC | 72.0°F | 73.0°F | -1.0° | 1.0 |