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 | 189 | 1.33 | -0.80 | 48.0 |
| Providence RI | 189 | 1.61 | -0.48 | 48.0 |
| Jackson MS | 189 | 1.85 | 1.27 | 48.0 |
| Little Rock AR | 189 | 1.87 | 0.04 | 48.0 |
| Baton Rouge LA | 189 | 1.92 | 1.51 | 48.0 |
| Augusta ME | 189 | 1.92 | -1.05 | 48.0 |
| Trenton NJ | 189 | 1.93 | 0.05 | 48.0 |
| Boston MA | 189 | 1.94 | 1.13 | 48.0 |
| Richmond VA | 189 | 1.98 | 0.13 | 48.0 |
| Hartford CT | 189 | 2.11 | -0.58 | 48.0 |
| Helena MT | 189 | 2.14 | 0.55 | 48.0 |
| Harrisburg PA | 189 | 2.14 | -0.21 | 48.0 |
| Atlanta GA | 189 | 2.16 | 0.51 | 48.0 |
| Charleston WV | 189 | 2.17 | 0.33 | 48.0 |
| Austin TX | 189 | 2.30 | 1.93 | 48.0 |
| Lansing MI | 189 | 2.31 | 1.38 | 48.0 |
| Concord NH | 189 | 2.31 | 0.19 | 48.0 |
| Carson City NV | 189 | 2.32 | 1.07 | 48.0 |
| Columbus OH | 189 | 2.32 | 1.88 | 48.0 |
| Tallahassee FL | 189 | 2.33 | -0.11 | 48.0 |
| Albany NY | 189 | 2.38 | 0.39 | 48.0 |
| Annapolis MD | 189 | 2.41 | 1.06 | 48.0 |
| Dover DE | 189 | 2.50 | 0.36 | 48.0 |
| Jefferson City MO | 189 | 2.50 | 0.61 | 48.0 |
| Juneau AK | 189 | 2.52 | 0.66 | 48.0 |
| Raleigh NC | 189 | 2.52 | 1.11 | 48.0 |
| Montgomery AL | 189 | 2.54 | 1.02 | 48.0 |
| Sacramento CA | 189 | 2.61 | 2.03 | 48.0 |
| Nashville TN | 189 | 2.63 | 0.40 | 48.0 |
| Des Moines IA | 189 | 2.65 | -0.02 | 48.0 |
| Indianapolis IN | 189 | 2.66 | 1.62 | 48.0 |
| Springfield IL | 189 | 2.70 | 2.24 | 48.0 |
| Salt Lake City UT | 189 | 2.74 | -0.66 | 48.0 |
| Santa Fe NM | 189 | 2.85 | -0.11 | 48.0 |
| Saint Paul MN | 189 | 2.87 | 1.71 | 48.0 |
| Columbia SC | 189 | 2.90 | -1.02 | 48.0 |
| Phoenix AZ | 189 | 2.95 | -0.40 | 48.0 |
| Montpelier VT | 189 | 2.97 | 1.62 | 48.0 |
| Salem OR | 189 | 3.04 | 1.65 | 48.0 |
| Madison WI | 189 | 3.11 | 1.40 | 48.0 |
| Cheyenne WY | 189 | 3.13 | 0.29 | 48.0 |
| Olympia WA | 189 | 3.14 | -1.34 | 48.0 |
| Topeka KS | 189 | 3.19 | 1.12 | 48.0 |
| Lincoln NE | 189 | 3.20 | 0.94 | 48.0 |
| Boise ID | 189 | 3.28 | 2.68 | 48.0 |
| Denver CO | 189 | 3.51 | 1.46 | 48.0 |
| Oklahoma City OK | 189 | 3.67 | 3.20 | 48.0 |
| Frankfort KY | 189 | 3.80 | 3.43 | 48.0 |
| Bismarck ND | 189 | 3.99 | 3.13 | 48.0 |
| Pierre SD | 189 | 4.10 | 2.89 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-07-29 15:00 CDT | Montgomery AL | 93.0°F | 95.0°F | -2.0° | 48.0 |
| 2026-07-29 12:00 AKDT | Juneau AK | 59.0°F | 58.0°F | +1.0° | 48.0 |
| 2026-07-29 13:00 MST | Phoenix AZ | 107.0°F | 104.0°F | +3.0° | 48.0 |
| 2026-07-29 15:00 CDT | Little Rock AR | 92.0°F | 92.0°F | +0.0° | 48.0 |
| 2026-07-29 13:00 PDT | Sacramento CA | 89.0°F | 87.0°F | +2.0° | 48.0 |
| 2026-07-29 14:00 MDT | Denver CO | 90.0°F | 90.0°F | +0.0° | 48.0 |
| 2026-07-29 16:00 EDT | Hartford CT | 72.0°F | 76.0°F | -4.0° | 48.0 |
| 2026-07-29 16:00 EDT | Dover DE | 79.0°F | 82.0°F | -3.0° | 48.0 |
| 2026-07-29 16:00 EDT | Tallahassee FL | 92.0°F | 101.0°F | -9.0° | 48.0 |
| 2026-07-29 16:00 EDT | Atlanta GA | 89.0°F | 88.0°F | +1.0° | 48.0 |
| 2026-07-29 10:00 HST | Honolulu HI | 84.0°F | 85.0°F | -1.0° | 48.0 |
| 2026-07-29 14:00 MDT | Boise ID | 89.0°F | 85.0°F | +4.0° | 48.0 |
| 2026-07-29 15:00 CDT | Springfield IL | 85.0°F | 83.0°F | +2.0° | 48.0 |
| 2026-07-29 16:00 EDT | Indianapolis IN | 83.0°F | 81.0°F | +2.0° | 48.0 |
| 2026-07-29 15:00 CDT | Des Moines IA | 88.0°F | 86.0°F | +2.0° | 48.0 |
| 2026-07-29 15:00 CDT | Topeka KS | 87.0°F | 82.0°F | +5.0° | 48.0 |
| 2026-07-29 16:00 EDT | Frankfort KY | 85.0°F | 80.0°F | +5.0° | 48.0 |
| 2026-07-29 15:00 CDT | Baton Rouge LA | 97.0°F | 93.0°F | +4.0° | 48.0 |
| 2026-07-29 16:00 EDT | Augusta ME | 72.0°F | 72.0°F | +0.0° | 48.0 |
| 2026-07-29 16:00 EDT | Annapolis MD | 84.0°F | 81.0°F | +3.0° | 48.0 |
| 2026-07-29 16:00 EDT | Boston MA | 68.0°F | 67.0°F | +1.0° | 48.0 |
| 2026-07-29 16:00 EDT | Lansing MI | 81.0°F | 80.0°F | +1.0° | 48.0 |
| 2026-07-29 15:00 CDT | Saint Paul MN | 90.0°F | 91.0°F | -1.0° | 48.0 |
| 2026-07-29 15:00 CDT | Jackson MS | 97.0°F | 97.0°F | +0.0° | 48.0 |
| 2026-07-29 15:00 CDT | Jefferson City MO | 90.0°F | 86.0°F | +4.0° | 48.0 |
| 2026-07-29 14:00 MDT | Helena MT | 89.0°F | 89.0°F | +0.0° | 48.0 |
| 2026-07-29 15:00 CDT | Lincoln NE | 91.0°F | 87.0°F | +4.0° | 48.0 |
| 2026-07-29 13:00 PDT | Carson City NV | 90.0°F | 91.0°F | -1.0° | 48.0 |
| 2026-07-29 16:00 EDT | Concord NH | 71.0°F | 64.0°F | +7.0° | 48.0 |
| 2026-07-29 16:00 EDT | Trenton NJ | 77.0°F | 82.0°F | -5.0° | 48.0 |
| 2026-07-29 14:00 MDT | Santa Fe NM | 89.0°F | 89.0°F | +0.0° | 48.0 |
| 2026-07-29 16:00 EDT | Albany NY | 74.0°F | 65.0°F | +9.0° | 48.0 |
| 2026-07-29 16:00 EDT | Raleigh NC | 88.0°F | 87.0°F | +1.0° | 48.0 |
| 2026-07-29 15:00 CDT | Bismarck ND | 97.0°F | 101.0°F | -4.0° | 48.0 |
| 2026-07-29 16:00 EDT | Columbus OH | 80.0°F | 80.0°F | +0.0° | 48.0 |
| 2026-07-29 15:00 CDT | Oklahoma City OK | 100.0°F | 101.0°F | -1.0° | 48.0 |
| 2026-07-29 13:00 PDT | Salem OR | 77.0°F | 74.0°F | +3.0° | 48.0 |
| 2026-07-29 16:00 EDT | Harrisburg PA | 78.0°F | 79.0°F | -1.0° | 48.0 |
| 2026-07-29 16:00 EDT | Providence RI | 71.0°F | 73.0°F | -2.0° | 48.0 |
| 2026-07-29 16:00 EDT | Columbia SC | 92.0°F | 96.0°F | -4.0° | 48.0 |