| May 2012 | Precipitation | Normal | Departure | Snowfall | Seasonal Snowfall |
| Acadia National Park | 7.52 | 4.64 | 2.88 | ||
| Albion | 6.38 | 3.68 | 2.70 | 58.4 | |
| Andover | 6.49 | 4.12 | 2.37 | 84.0 | |
| Augusta Airport | 5.74 | 3.69 | 2.05 | ||
| Augusta Hatch Hill | 5.82 | 54.8 | |||
| Bangor Airport | 5.12 | 3.64 | 1.48 | 49.1 | |
| Bath | 4.98 | 4.04 | 0.94 | 50.5 | |
| Belfast | 5.95 | 4.23 | 1.72 | 49.2 | |
| Bethel | 5.61 | 76.7 | |||
| Bingham | 4.82 | 3.74 | 1.08 | ||
| Brassua Lake | 3.84 | 3.75 | 0.09 | 63.7 | |
| Bridgewater | 3.56 | 3.62 | -0.06 | 78.4 | |
| Bridgton | 6.89 | 3.77 | 3.12 | 61.5 | |
| Cape Neddick | 4.67 | 4.29 | 0.38 | 35.4 | |
| Caribou | 4.11 | 3.33 | 0.78 | 103.7 | |
| Chamberlain Bridge | 4.84 | ||||
| Churchill Dam | 3.13 | ||||
| Corinna | 4.57 | 3.85 | 0.72 | 53.8 | |
| Dover-Foxcroft | 4.46 | 3.58 | 0.88 | 47.8 | |
| Durham | 5.38 | 3.95 | 1.43 | 59.2 | |
| East Surry | 6.69 | ||||
| East Waterford | 7.09 | 66.0 | |||
| Eliot | 4.09 | 4.16 | -0.07 | 24.5 | |
| Eustis | 3.55 | 3.46 | 0.09 | 74.5 | |
| Farmington | 5.96 | 4.03 | 1.93 | 67.1 | |
| Fort Kent | 3.56 | 3.25 | 0.31 | 80.7 | |
| Frenchville | 3.62 | 3.04 | 0.58 | ||
| Fryeburg | 6.36 | ||||
| Gardiner | 5.95 | 3.88 | 2.07 | 55.5 | |
| Grand Lake Stream | 3.43 | 3.60 | -0.17 | ||
| Gray | 5.24 | 3.90 | 1.34 | 65.1 | |
| Harmony | 5.53 | 3.66 | 1.87 | 46.6 | |
| Harris Dam | 3.25 | 3.48 | -0.23 | ||
| Hartford | 5.45 | 3.93 | 1.52 | 82.9 | |
| Hollis | 5.76 | 4.40 | 1.36 | 51.1 | |
| Houlton Airport | 3.46 | 3.30 | 0.16 | ||
| Houlton 5N | 3.73 | 3.45 | 0.28 | 79.1 | |
| Jackman | 3.59 | 3.41 | 0.18 | 76.4 | |
| Kennebunkport | 5.72 | 4.50 | 1.22 | 19.9 | |
| Kingfield | 4.17 | 3.87 | 0.30 | 55.4 | |
| Lincoln | 7.02 | 3.82 | 3.20 | ||
| Livermore Falls | 6.16 | 3.83 | 2.33 | 67.5 | |
| Long Falls Dam | 3.24 | 3.39 | -0.15 | 70.3 | |
| Machias | 7.11 | 4.30 | 2.81 | ||
| Madison | 5.34 | 3.47 | 1.87 | 48.5 | |
| Middle Dam | 4.69 | 3.47 | 1.22 | 63.2 | |
| Millinocket | 4.18 | 3.84 | 0.34 | ||
| Millinocket Airport | 3.78 | ||||
| Moosehead | 3.22 | 3.33 | -0.11 | 63.7 | |
| Newcastle | 5.86 | 4.12 | 1.74 | 54.9 | |
| New Sharon | 5.85 | 3.76 | 2.09 | 65.6 | |
| North Sebago | 6.00 | 3.95 | 2.05 | 47.5 | |
| Norway | 6.13 | 3.86 | 2.27 | 65.4 | |
| Phillips | 4.97 | 3.81 | 1.16 | 66.7 | |
| Pittston Farm | 4.32 | 3.44 | 0.88 | 77.0 | |
| Poland | 6.50 | 3.89 | 2.61 | 65.8 | |
| Port Clyde | 5.16 | 3.79 | 1.37 | 24.5 | |
| Portland | 5.91 | 4.01 | 1.90 | 43.9 | |
| Presque Isle | 3.14 | 3.35 | -0.21 | 83.5 | |
| Rangeley | 3.78 | 3.47 | 0.31 | 83.6 | |
| Rangeley /Chick Hill/ | 3.90 | 3.47 | 0.43 | 85.4 | |
| Robbinston | 5.36 | 4.32 | 1.04 | 55.6 | |
| Rumford | 5.55 | 4.03 | 1.52 | 62.5 | |
| Sanford | 4.49 | 4.36 | 0.13 | 28.7 | |
| South Berwick | 4.18 | 39.7 | |||
| Topsfield | 4.81 | 3.85 | 0.96 | 75.2 | |
| Turner | 6.16 | 3.91 | 2.25 | 62.0 | |
| Upper Dam | 4.42 | 52.2 | |||
| Van Buren | 3.81 | 3.34 | 0.47 | 87.7 | |
| Waltham | 5.40 | ||||
| Waterville | 5.68 | 3.79 | 1.89 | 48.8 | |
| Wesley | 5.35 | 4.36 | 0.99 | ||
| Westport Island | 5.46 | 3.91 | 1.55 | 41.1 | |
| West Rockport | 6.77 | 4.41 | 2.36 | 47.8 | |
| Windham | 5.14 | 54.4 | |||
| Winthrop | 6.41 | 56.4 | |||
| Wiscasset | 5.17 | ||||
| Woodland | 5.80 | 3.93 | 1.87 | 37.6 | |
| May 2012 | Precipitation | Normal | Departure | Monthly Snowfall | Seasonal Snowfall |
| Alexandria | 6.56 | 4.56 | 2.00 | ||
| Bath | 5.26 | 34.6 | |||
| Benton | 6.74 | 3.55 | 3.19 | 50.0 | |
| Berlin | 5.16 | 3.49 | 1.67 | 59.2 | |
| Berlin Airport | 3.74 | ||||
| Bethlehem | 5.84 | 3.38 | 2.46 | 50.7 | |
| Blackwater Dam | 3.21 | 4.12 | -0.91 | ||
| Bradford | 5.91 | 4.18 | 1.73 | 46.5 | |
| Colebrook | 5.36 | 3.67 | 1.69 | 59.8 | |
| Concord | 4.76 | 3.66 | 1.10 | 48.9 | |
| Durham | 4.74 | 3.99 | 0.75 | 21.1 | |
| East Milford | 4.34 | 3.86 | 0.48 | 32.2 | |
| Epping | 3.82 | 4.08 | -0.26 | 34.8 | |
| Errol | 7.09 | 3.67 | 3.42 | 77.8 | |
| Everett Dam | 5.07 | ||||
| First Connecticut Lake | 5.11 | 4.18 | 0.93 | 88.0 | |
| Fitzwilliam | 6.39 | 3.94 | 2.45 | 55.5 | |
| Francestown | 5.79 | ||||
| Franklin Falls Dam | 5.42 | 3.89 | 1.53 | ||
| Glencliff | 6.75 | 3.58 | 3.17 | 36.0 | |
| Gorham | 4.68 | 3.39 | 1.29 | 64.7 | |
| Greenland | 5.09 | 4.24 | 0.85 | 33.0 | |
| Greenville | 5.40 | 3.98 | 1.42 | 60.9 | |
| Hanover | 5.84 | 3.50 | 2.34 | 27.9 | |
| Hopkinton Dam | 6.05 | ||||
| Hudson | 3.60 | 3.92 | -0.32 | 32.9 | |
| Jaffrey Airport | 5.59 | 67.7 | |||
| Jefferson | 6.05 | 3.46 | 2.59 | 57.4 | |
| Keene | 7.50 | 3.93 | 3.57 | 40.2 | |
| Laconia | 5.03 | 60.7 | |||
| Lakeport | 4.58 | 3.71 | 0.87 | 44.2 | |
| Lancaster | 7.00 | 3.43 | 3.57 | 45.4 | |
| Lebanon | 5.11 | 3.46 | 1.65 | ||
| Macdowell Dam | 6.77 | 3.87 | 2.9 | ||
| Manchester Airport | 3.49 | ||||
| Massabesic Lake | 3.59 | 3.82 | -0.23 | 26.5 | |
| Meredith | 4.86 | 3.98 | 0.88 | 64.9 | |
| Mount Sunapee | 5.43 | 4.31 | 1.12 | 55.2 | |
| Mount Washington | 8.48 | 8.21 | 0.27 | 3.9 | 231.8 |
| Nashua | 4.38 | 4.07 | 0.31 | 25.9 | |
| New Hampton | 5.64 | 58.5 | |||
| Newport | 5.88 | 3.53 | 2.35 | 46.8 | |
| North Conway | 7.28 | 3.92 | 3.36 | 72.4 | |
| North Hampton | 4.08 | 4.50 | -0.42 | 28.0 | |
| North Haverhill | 5.69 | 40.8 | |||
| North Stratford | 3.83 | 3.65 | 0.18 | 47.2 | |
| Otter Brook Lake | 7.23 | 3.95 | 3.28 | ||
| Pinkham Notch | 7.93 | 5.19 | 2.74 | 100.4 | |
| Portsmouth | 3.52 | 3.85 | -0.33 | 26.0 | |
| Rochester | 4.10 | 4.45 | -0.35 | 31.0 | |
| Rochester Airport | 3.75 | ||||
| Surry Mountain Lake | 10.76 | 4.23 | 6.53 | ||
| Tamworth | 6.04 | 4.36 | 1.68 | 69.1 | |
| Walpole | 7.96 | 3.92 | 4.04 | 44.0 | |
| Wentworth | 5.69 | 3.72 | 1.97 | 34.7 | |
| West Hampstead | 4.06 | 4.04 | 0.02 | 37.7 | |
| Whitefield | 5.08 | ||||
| Wolfeboro | 4.08 | ||||
| York Pond | 5.75 | 4.24 | 1.51 | 62.1 |