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) |
|---|---|---|---|---|
| Albany NY | 182 | 1.77 | -0.82 | 48.0 |
| Saint Paul MN | 182 | 1.82 | -0.59 | 48.0 |
| Des Moines IA | 182 | 1.90 | -0.41 | 48.0 |
| Honolulu HI | 182 | 1.95 | -1.80 | 48.0 |
| Springfield IL | 182 | 1.99 | 0.86 | 48.0 |
| Boston MA | 182 | 2.01 | -0.61 | 48.0 |
| Little Rock AR | 182 | 2.02 | 1.15 | 48.0 |
| Bismarck ND | 182 | 2.10 | 0.68 | 48.0 |
| Providence RI | 182 | 2.12 | -1.46 | 48.0 |
| Lansing MI | 182 | 2.15 | 0.52 | 48.0 |
| Oklahoma City OK | 182 | 2.22 | 0.38 | 48.0 |
| Richmond VA | 182 | 2.23 | -0.15 | 48.0 |
| Salt Lake City UT | 182 | 2.27 | 0.05 | 48.0 |
| Hartford CT | 182 | 2.29 | -1.23 | 48.0 |
| Boise ID | 182 | 2.31 | 0.41 | 48.0 |
| Indianapolis IN | 182 | 2.32 | 0.97 | 48.0 |
| Austin TX | 182 | 2.33 | 1.65 | 48.0 |
| Madison WI | 182 | 2.34 | 0.36 | 48.0 |
| Trenton NJ | 182 | 2.37 | -0.80 | 48.0 |
| Jackson MS | 182 | 2.42 | 1.64 | 48.0 |
| Columbus OH | 182 | 2.45 | 1.19 | 48.0 |
| Atlanta GA | 182 | 2.48 | 1.75 | 48.0 |
| Helena MT | 182 | 2.48 | 1.59 | 48.0 |
| Montgomery AL | 182 | 2.52 | 1.48 | 48.0 |
| Juneau AK | 182 | 2.56 | -0.40 | 48.0 |
| Tallahassee FL | 182 | 2.60 | 1.46 | 48.0 |
| Topeka KS | 182 | 2.60 | -0.31 | 48.0 |
| Pierre SD | 182 | 2.60 | -0.01 | 48.0 |
| Jefferson City MO | 182 | 2.68 | 0.44 | 48.0 |
| Frankfort KY | 182 | 2.74 | 0.66 | 48.0 |
| Santa Fe NM | 182 | 2.78 | 0.08 | 48.0 |
| Annapolis MD | 182 | 2.79 | 0.21 | 48.0 |
| Columbia SC | 182 | 2.83 | 1.23 | 48.0 |
| Lincoln NE | 182 | 2.85 | -1.60 | 48.0 |
| Sacramento CA | 182 | 2.87 | 2.43 | 48.0 |
| Dover DE | 182 | 2.90 | -0.31 | 48.0 |
| Salem OR | 182 | 2.92 | 0.90 | 48.0 |
| Olympia WA | 182 | 2.98 | 1.83 | 48.0 |
| Carson City NV | 182 | 3.01 | 0.91 | 48.0 |
| Raleigh NC | 182 | 3.04 | 0.72 | 48.0 |
| Cheyenne WY | 182 | 3.12 | -0.36 | 48.0 |
| Charleston WV | 182 | 3.16 | 1.81 | 48.0 |
| Harrisburg PA | 182 | 3.19 | -1.17 | 48.0 |
| Augusta ME | 182 | 3.28 | -2.23 | 48.0 |
| Denver CO | 182 | 3.35 | 1.74 | 48.0 |
| Baton Rouge LA | 182 | 3.58 | 3.28 | 48.0 |
| Concord NH | 182 | 3.63 | -1.46 | 48.0 |
| Montpelier VT | 182 | 3.96 | 2.05 | 48.0 |
| Nashville TN | 182 | 3.98 | 2.45 | 48.0 |
| Phoenix AZ | 182 | 4.19 | -0.43 | 48.0 |
Each row pairs an observation with the earliest forecast we had for that hour.
| When (local) | City | Forecast | Actual | Error | Lead (h) |
|---|---|---|---|---|---|
| 2026-09-27 08:00 CDT | Montgomery AL | 66.0°F | 64.0°F | +2.0° | 48.0 |
| 2026-09-27 05:00 AKDT | Juneau AK | 48.0°F | 49.0°F | -1.0° | 48.0 |
| 2026-09-27 06:00 MST | Phoenix AZ | 80.0°F | 79.0°F | +1.0° | 48.0 |
| 2026-09-27 08:00 CDT | Little Rock AR | 68.0°F | 68.0°F | +0.0° | 48.0 |
| 2026-09-27 06:00 PDT | Sacramento CA | 57.0°F | 57.0°F | +0.0° | 48.0 |
| 2026-09-27 07:00 MDT | Denver CO | 56.0°F | 56.0°F | +0.0° | 48.0 |
| 2026-09-27 09:00 EDT | Hartford CT | 58.0°F | 61.0°F | -3.0° | 48.0 |
| 2026-09-27 09:00 EDT | Dover DE | 59.0°F | 58.0°F | +1.0° | 48.0 |
| 2026-09-27 09:00 EDT | Tallahassee FL | 67.0°F | 64.0°F | +3.0° | 48.0 |
| 2026-09-27 09:00 EDT | Atlanta GA | 62.0°F | 57.0°F | +5.0° | 48.0 |
| 2026-09-27 03:00 HST | Honolulu HI | 77.0°F | 79.0°F | -2.0° | 48.0 |
| 2026-09-27 07:00 MDT | Boise ID | 52.0°F | 52.0°F | +0.0° | 48.0 |
| 2026-09-27 08:00 CDT | Springfield IL | 60.0°F | 62.0°F | -2.0° | 48.0 |
| 2026-09-27 09:00 EDT | Indianapolis IN | 54.0°F | 54.0°F | +0.0° | 48.0 |
| 2026-09-27 08:00 CDT | Des Moines IA | 61.0°F | 61.0°F | +0.0° | 48.0 |
| 2026-09-27 08:00 CDT | Topeka KS | 66.0°F | 65.0°F | +1.0° | 48.0 |
| 2026-09-27 09:00 EDT | Frankfort KY | 52.0°F | 52.0°F | +0.0° | 48.0 |
| 2026-09-27 08:00 CDT | Baton Rouge LA | 75.0°F | 71.0°F | +4.0° | 48.0 |
| 2026-09-27 09:00 EDT | Augusta ME | 53.0°F | 54.0°F | -1.0° | 48.0 |
| 2026-09-27 09:00 EDT | Annapolis MD | 61.0°F | 60.0°F | +1.0° | 48.0 |
| 2026-09-27 09:00 EDT | Boston MA | 59.0°F | 59.0°F | +0.0° | 48.0 |
| 2026-09-27 09:00 EDT | Lansing MI | 49.0°F | 49.0°F | +0.0° | 48.0 |
| 2026-09-27 08:00 CDT | Saint Paul MN | 58.0°F | 59.0°F | -1.0° | 48.0 |
| 2026-09-27 08:00 CDT | Jackson MS | 71.0°F | 68.0°F | +3.0° | 48.0 |
| 2026-09-27 08:00 CDT | Jefferson City MO | 65.0°F | 62.0°F | +3.0° | 48.0 |
| 2026-09-27 07:00 MDT | Helena MT | 43.0°F | 36.0°F | +7.0° | 48.0 |
| 2026-09-27 08:00 CDT | Lincoln NE | 64.0°F | 65.0°F | -1.0° | 48.0 |
| 2026-09-27 06:00 PDT | Carson City NV | 52.0°F | 50.0°F | +2.0° | 48.0 |
| 2026-09-27 09:00 EDT | Concord NH | 54.0°F | 56.0°F | -2.0° | 48.0 |
| 2026-09-27 09:00 EDT | Trenton NJ | 57.0°F | 59.0°F | -2.0° | 48.0 |
| 2026-09-27 07:00 MDT | Santa Fe NM | 53.0°F | 51.0°F | +2.0° | 48.0 |
| 2026-09-27 09:00 EDT | Albany NY | 57.0°F | 57.0°F | +0.0° | 48.0 |
| 2026-09-27 09:00 EDT | Raleigh NC | 60.0°F | 62.0°F | -2.0° | 48.0 |
| 2026-09-27 08:00 CDT | Bismarck ND | 51.0°F | 51.0°F | +0.0° | 48.0 |
| 2026-09-27 09:00 EDT | Columbus OH | 54.0°F | 54.0°F | +0.0° | 48.0 |
| 2026-09-27 08:00 CDT | Oklahoma City OK | 74.0°F | 67.0°F | +7.0° | 48.0 |
| 2026-09-27 06:00 PDT | Salem OR | 48.0°F | 46.0°F | +2.0° | 48.0 |
| 2026-09-27 09:00 EDT | Harrisburg PA | 58.0°F | 61.0°F | -3.0° | 48.0 |
| 2026-09-27 09:00 EDT | Providence RI | 60.0°F | 61.0°F | -1.0° | 48.0 |
| 2026-09-27 09:00 EDT | Columbia SC | 60.0°F | 61.0°F | -1.0° | 48.0 |