Environment Canada calculates “Normals” for a subset of stations. Those are the anomalies from the 1971-2000 average.
I just started using the daily data this month. (The monthly summaries have proven to be unreliable)
So … using stations with Normals, here are the 100 stations with the coldest TMIN anomalies.
| PROVINCE | Name | DATE | MINTEMP | NORMAL MINTEMP | anomaly MIN |
| MANITOBA | GILBERT PLAINS | 2013-05-02 | -15 | 0.5 | -15.5 |
| SASKATCHEWAN | CYPRESS HILLS | 2013-05-01 | -15.5 | -0.2 | -15.3 |
| MANITOBA | GILBERT PLAINS | 2013-05-03 | -12.5 | 0.7 | -13.2 |
| ONTARIO | WELLAND | 2013-05-14 | -6 | 7.2 | -13.2 |
| MANITOBA | COWAN | 2013-05-02 | -14 | -1 | -13 |
| MANITOBA | WASAGAMING | 2013-05-02 | -14.3 | -1.3 | -13 |
| ONTARIO | WELLAND | 2013-05-13 | -6 | 7 | -13 |
| NUNAVUT | CORAL HARBOUR A | 2013-05-10 | -25.4 | -13 | -12.4 |
| SASKATCHEWAN | KEY LAKE | 2013-05-01 | -15.5 | -3.1 | -12.4 |
| NUNAVUT | KUGLUKTUK A | 2013-05-01 | -27.9 | -15.5 | -12.4 |
| YUKON TERRITORY | SHINGLE POINT A | 2013-05-01 | -27.3 | -14.9 | -12.4 |
| NUNAVUT | BAKER LAKE A | 2013-05-09 | -24.3 | -12.1 | -12.2 |
| SASKATCHEWAN | LAST MOUNTAIN CS | 2013-05-11 | -8.8 | 3.4 | -12.2 |
| YUKON TERRITORY | SHINGLE POINT A | 2013-05-03 | -26.1 | -13.9 | -12.2 |
| SASKATCHEWAN | BROADVIEW | 2013-05-02 | -10.6 | 1.2 | -11.8 |
| YUKON TERRITORY | SHINGLE POINT A | 2013-05-06 | -24.2 | -12.4 | -11.8 |
| NUNAVUT | BAKER LAKE A | 2013-05-02 | -26.8 | -15.1 | -11.7 |
| SASKATCHEWAN | PELLY | 2013-05-02 | -12 | -0.6 | -11.4 |
| NUNAVUT | KUGLUKTUK A | 2013-05-07 | -24 | -12.8 | -11.2 |
| BRITISH COLUMBIA | FT STEELE DANDY CRK | 2013-05-01 | -10 | 1.1 | -11.1 |
| ALBERTA | HIGH LEVEL A | 2013-05-01 | -11.5 | -0.4 | -11.1 |
| MANITOBA | INDIAN BAY | 2013-05-12 | -7.5 | 3.6 | -11.1 |
| SASKATCHEWAN | QUAPPELLE 1 | 2013-05-10 | -7.5 | 3.4 | -10.9 |
| SASKATCHEWAN | DUVAL | 2013-05-01 | -8 | 2.8 | -10.8 |
| NUNAVUT | BAKER LAKE A | 2013-05-01 | -26.3 | -15.6 | -10.7 |
| ALBERTA | CRAIGMYLE | 2013-05-01 | -10 | 0.6 | -10.6 |
| YUKON TERRITORY | SHINGLE POINT A | 2013-05-20 | -17 | -6.4 | -10.6 |
| ALBERTA | VEGREVILLE | 2013-05-01 | -9.4 | 1.2 | -10.6 |
| NUNAVUT | CORAL HARBOUR A | 2013-05-09 | -23.9 | -13.4 | -10.5 |
| ALBERTA | KANANASKIS | 2013-05-01 | -11.5 | -1 | -10.5 |
| SASKATCHEWAN | CLAYDON | 2013-05-01 | -9 | 1.4 | -10.4 |
| ALBERTA | LETHBRIDGE CDA | 2013-05-01 | -8.3 | 2.1 | -10.4 |
| MANITOBA | PINAWA WNRE | 2013-05-12 | -6.5 | 3.9 | -10.4 |
| NORTHWEST TERRITORIES | FORT SMITH A | 2013-05-01 | -11.9 | -1.6 | -10.3 |
| SASKATCHEWAN | INDIAN HEAD CDA | 2013-05-01 | -9 | 1.3 | -10.3 |
| SASKATCHEWAN | BEECHY | 2013-05-11 | -6.5 | 3.7 | -10.2 |
| SASKATCHEWAN | STEWART VALLEY | 2013-05-01 | -8 | 2.1 | -10.1 |
| MANITOBA | HODGSON 2 | 2013-05-02 | -10.5 | -0.5 | -10 |
| ONTARIO | KINGSVILLE MOE | 2013-05-13 | -1 | 9 | -10 |
| NUNAVUT | KUGLUKTUK A | 2013-05-08 | -22.4 | -12.4 | -10 |
| SASKATCHEWAN | LANGENBURG | 2013-05-02 | -9 | 1 | -10 |
| SASKATCHEWAN | MUENSTER | 2013-05-11 | -6.5 | 3.5 | -10 |
| SASKATCHEWAN | REGINA INTL A | 2013-05-01 | -8.4 | 1.6 | -10 |
| NUNAVUT | CAMBRIDGE BAY A | 2013-05-02 | -29.3 | -19.4 | -9.9 |
| ONTARIO | KINGSVILLE MOE | 2013-05-25 | 1.5 | 11.4 | -9.9 |
| ONTARIO | ST THOMAS WPCP | 2013-05-25 | -0.5 | 9.4 | -9.9 |
| SASKATCHEWAN | CORONACH | 2013-05-11 | -6.5 | 3.3 | -9.8 |
| SASKATCHEWAN | CORONACH SPC | 2013-05-11 | -6.5 | 3.3 | -9.8 |
| NUNAVUT | KUGLUKTUK A | 2013-05-04 | -23.9 | -14.1 | -9.8 |
| MANITOBA | MCCREARY | 2013-05-02 | -8.4 | 1.4 | -9.8 |
| ONTARIO | NEW GLASGOW | 2013-05-27 | 0.5 | 10.3 | -9.8 |
| SASKATCHEWAN | PARKERVIEW | 2013-05-02 | -8 | 1.8 | -9.8 |
| MANITOBA | PINAWA WNRE | 2013-05-03 | -8 | 1.8 | -9.8 |
| SASKATCHEWAN | SWIFT CURRENT CDA | 2013-05-01 | -8 | 1.8 | -9.8 |
| ALBERTA | COLD LAKE A | 2013-05-01 | -8.1 | 1.6 | -9.7 |
| SASKATCHEWAN | KEY LAKE | 2013-05-08 | -11 | -1.3 | -9.7 |
| SASKATCHEWAN | OUTLOOK PFRA | 2013-05-11 | -5.7 | 4 | -9.7 |
| ONTARIO | FOLDENS | 2013-05-25 | 0 | 9.6 | -9.6 |
| MANITOBA | HODGSON 2 | 2013-05-12 | -8 | 1.6 | -9.6 |
| SASKATCHEWAN | PARKERVIEW | 2013-05-01 | -8 | 1.6 | -9.6 |
| SASKATCHEWAN | BUFFALO POUND LAKE | 2013-05-01 | -7.5 | 2 | -9.5 |
| NUNAVUT | RESOLUTE CARS | 2013-05-10 | -26.1 | -16.6 | -9.5 |
| SASKATCHEWAN | BROADVIEW | 2013-05-01 | -8.4 | 1 | -9.4 |
| NUNAVUT | CAMBRIDGE BAY A | 2013-05-06 | -26.9 | -17.5 | -9.4 |
| ALBERTA | LLOYDMINSTER A | 2013-05-01 | -8.2 | 1.2 | -9.4 |
| ONTARIO | NEW GLASGOW | 2013-05-25 | 0.5 | 9.9 | -9.4 |
| MANITOBA | THOMPSON A | 2013-05-01 | -13.5 | -4.1 | -9.4 |
| SASKATCHEWAN | CORONACH | 2013-05-01 | -8 | 1.3 | -9.3 |
| MANITOBA | CROSS LAKE JENPEG | 2013-05-02 | -10.2 | -0.9 | -9.3 |
| SASKATCHEWAN | MANKOTA | 2013-05-01 | -8.7 | 0.6 | -9.3 |
| MANITOBA | WASAGAMING | 2013-05-01 | -10.9 | -1.6 | -9.3 |
| SASKATCHEWAN | BUFFALO POUND LAKE | 2013-05-02 | -7 | 2.2 | -9.2 |
| BRITISH COLUMBIA | FT STEELE DANDY CRK | 2013-05-02 | -8 | 1.2 | -9.2 |
| SASKATCHEWAN | LAST MOUNTAIN CS | 2013-05-02 | -7.6 | 1.6 | -9.2 |
| SASKATCHEWAN | ROCK POINT | 2013-05-01 | -7 | 2.2 | -9.2 |
| ONTARIO | CHAPLEAU A | 2013-05-13 | -7.1 | 2 | -9.1 |
| MANITOBA | FLIN FLON | 2013-05-01 | -8.5 | 0.6 | -9.1 |
| SASKATCHEWAN | MUENSTER | 2013-05-01 | -7.5 | 1.6 | -9.1 |
| ONTARIO | NEW GLASGOW | 2013-05-26 | 1 | 10.1 | -9.1 |
| SASKATCHEWAN | REGINA INTL A | 2013-05-11 | -5.4 | 3.7 | -9.1 |
| NUNAVUT | BAKER LAKE A | 2013-05-08 | -21.5 | -12.5 | -9 |
| NUNAVUT | CAMBRIDGE BAY A | 2013-05-03 | -27.9 | -18.9 | -9 |
| SASKATCHEWAN | QUAPPELLE 1 | 2013-05-01 | -7.5 | 1.5 | -9 |
| BRITISH COLUMBIA | CASTLEGAR A | 2013-05-01 | -4.7 | 4.2 | -8.9 |
| MANITOBA | GILBERT PLAINS | 2013-05-23 | -4 | 4.9 | -8.9 |
| ONTARIO | HARTINGTON IHD | 2013-05-24 | 0 | 8.9 | -8.9 |
| SASKATCHEWAN | LAST MOUNTAIN CS | 2013-05-01 | -7.5 | 1.4 | -8.9 |
| MANITOBA | PILOT MOUND (AUT) | 2013-05-12 | -4.9 | 4 | -8.9 |
| NUNAVUT | CAMBRIDGE BAY A | 2013-05-04 | -27.2 | -18.4 | -8.8 |
| MANITOBA | CROSS LAKE JENPEG | 2013-05-01 | -10 | -1.2 | -8.8 |
| MANITOBA | GRAND RAPIDS HYDRO | 2013-05-24 | -4 | 4.8 | -8.8 |
| MANITOBA | ARBORG | 2013-05-02 | -8 | 0.7 | -8.7 |
| NUNAVUT | BAKER LAKE A | 2013-05-06 | -22.1 | -13.4 | -8.7 |
| NUNAVUT | CORAL HARBOUR A | 2013-05-08 | -22.5 | -13.8 | -8.7 |
| NUNAVUT | BAKER LAKE A | 2013-05-10 | -20.3 | -11.7 | -8.6 |
| ALBERTA | EDMONTON STONY PLAIN | 2013-05-01 | -6 | 2.6 | -8.6 |
| QUEBEC | LASSOMPTION | 2013-05-14 | -2.1 | 6.5 | -8.6 |
| ONTARIO | OTTAWA CDA | 2013-05-14 | -0.9 | 7.7 | -8.6 |
| ONTARIO | KAPUSKASING A | 2013-05-25 | -4.6 | 3.9 | -8.5 |
| NUNAVUT | KUGLUKTUK A | 2013-05-03 | -23.1 | -14.6 | -8.5 |
sunshine hours 