| Blue Hill Meteorological Observatory |
| 42° 12' 44"N, 71° 06' 53"W, Elevation 635 feet Milton, Massachusetts USA |
| Today's Highs and Lows | ||
| Temperature | 76.7°F @ 7:39 AM 65.5°F @ 4:06 AM |
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| Dew Point | 67.0°F 7:39 AM 60.5°F 4:06 AM |
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| Humidity | 85% 4:08 AM 71% 7:38 AM |
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| Wind Gust | 24 mph SW @ 5:51 AM |
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| Wind Speed | 17 mph SW @ 12:03 AM |
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| Barometer | 30.104" 12:00 AM 30.047" 7:17 AM |
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| Precipitation | Max 0.00"1 12:00 AM Last 24 hours 0.00" Storm total 0.00" |
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| Evapotranspiration | 0.025" | |
| Wind Chill Gust | Min 64°F 4:07 AM | |
| Wind Chill Avg | Min 65°F 4:07 AM | |
| Heat Index | Max 78°F 7:32 AM | |
| Sunshine | Max 499 W/m2 7:39 AM | |
| 1. Instantaneous rainfall rate. | ||
| Yesterday May 18, 2026 | ||
| Maximum, Minimum | Mean/Total | |
| Temperature | 84.8°F @ 4:10 PM 62.4°F @ 5:09 AM |
73.6° |
| Dew Point | 63.3°F 5:08 PM 44.0°F 3:47 AM |
54.2° |
| Humidity | 78% 11:50 PM 34% 12:34 PM |
53.2% |
| Wind Gust | 35 mph S @ 4:59 PM |
11.8 159° |
| Wind Speed | 23 mph S @ 5:01 PM |
|
| Barometer | 30.249" 8:05 AM 30.087" 7:24 PM |
30.159 |
| Wind Chill Gust | Min 60°F 5:08 AM | |
| Wind Chill Avg | Min 61°F 5:07 AM | |
| Heat Index | Max 85°F 3:49 PM | |
| Sunshine | Max 967 W/m2 10:41 AM | 305.4 |
| Degree Days |
Heating (Base 65°F): 0 Cooling (Base 65°F): 9 |
|
| Precipitation | 0.00" | |
| Evapotranspiration | 0.298" | |
| Precipitation Types | none | |
| Snowfall | 0.0" | |
| Snowcover | 0" | |
| Forecast |
| Partly cloudy with little temperature change. |
| Number of Days | |
| For May | For 2026 |
| Rain: 7 Snow: 0 Heavy Fog: 0 Thunder: 0 High ≥ 90°F: 0 Low ≤ 32°F: 0 High ≤ 32°F: 0 Low ≤ 0°F: 0 Cloudy: 0 Partly Cloudy: 0 Clear: 0 |
Rain: 45 Snow: 0 Heavy Fog: 0 Thunder: 0 High ≥ 90°F: 0 Low ≤ 32°F: 83 High ≤ 32°F: 30 Low ≤ 0°F: 2 Cloudy: 0 Partly Cloudy: 0 Clear: 0 |
| Date of last rainfall: May 17, 2026 (2 days) | |
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| Monthly and Yearly Statistics | ||
| Monthly Maximum, Minimum, Mean/Total |
Yearly Maximum, Minimum, Mean/Total |
|
| Temperature °F | 86.3° on May 17 3:37 PM 40.4° on May 8 3:40 AM Mean 57.8° |
86.3° on May 17 3:37 PM -0.9° on Jan 31 5:34 AM Mean 39.3° |
| Dew Point °F | 67.0° on May 19 7:39 AM 25.3° on May 3 6:33 PM Mean 43.5° |
67.0° on May 19 7:39 AM -14.2° on Jan 24 7:40 AM Mean 28.9° |
| Humidity | 98% on May 15 6:50 AM 27% on May 4 12:50 PM Mean 65.1% |
98% on Mar 7 3:12 AM 18% on Apr 9 1:08 PM Mean 70.6% |
| Wind Gust (mph) | S 47 on May 5 3:56 PM WNW 0 on May 1 9:30 PM Mean 234° 11.9 |
S 90 on Mar 17 12:22 AM NNW 0 on Jan 4 9:36 AM Mean 244° 11.8 |
| Wind Speed | S 30 on May 13 2:54 PM N 0 on May 1 6:15 AM |
S 57 on Mar 17 12:12 AM N 0 on Jan 4 9:06 AM |
| Barometer | 30.249" on May 18 8:05 AM 29.694" on May 14 5:22 PM Mean 29.918" |
30.708" on Mar 2 10:38 AM 29.304" on Mar 17 2:16 AM Mean 30.021" |
| Precipitation | Total 0.96" | Total 93.08" |
| Evapotranspiration | Total 3.153" | Total 12.821" |
| Wind Chill Gust °F | Min 32° on May 3 5:53 AM | Min -27° on Feb 8 6:42 AM |
| Wind Chill Avg °F | Min 33° on May 3 11:26 PM | Min -25° on Feb 8 6:43 AM |
| Heat Index °F | Max 86° on May 17 3:03 PM | Max 86° on May 17 3:03 PM |
| Sunshine (W/m2) | Max 1225 on May 12 12:17 PM Mean 221.7 |
Max 1227 on Apr 6 12:09 PM Mean 141.5 |
| Extremes are the first of multiple occurrences. | ||
| All-Time Records | ||
| Maximum, Minimum | ||
| Temperature °F | 99.1° on Jul 6, 2010 1:59 PM -13.4° on Feb 4, 2023 5:47 AM |
|
| Dew Point °F | 81.5° on Jul 20, 2019 1:48 PM -79.1° on Nov 26, 2009 3:18 AM |
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| Humidity | 100% on Apr 24, 2004 7:18 AM 0% on Apr 5, 2007 8:24 AM |
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| Wind Gust (mph) | SSE 95 on Dec 19, 2023 11:31 AM ESE 0 on Apr 21, 2004 1:52 AM |
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| Wind Speed | S 57 on Apr 13, 2020 3:38 PM SSW 0 on Apr 21, 2004 2:06 AM |
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| Barometer | 30.932" on Dec 14, 2024 10:03 AM 28.675" on Feb 7, 2020 2:58 PM |
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| Precipitation | Max rate 96.00"/hr on Jan 12, 2005 5:44 PM | |
| Evapotranspiration | Max day 2.823" on Dec 31, 2009 12:00 PM | |
| Wind Chill Gust °F | Min -138° on Feb 3, 2023 3:33 AM | |
| Wind Chill Avg °F | Min -134° on Feb 3, 2023 3:36 AM | |
| Heat Index °F | Max 113° on Jun 20, 2024 12:23 PM | |
| Sunshine (W/m2) | Max 1498 on Jul 13, 2024 11:20 AM | |
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Records begin 04/20/2004. Extremes are the first of multiple occurrences. |
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| Battery Status | |
| Transmitters | All OK |
| Console | 4.71V |
Data generated by WxSolution Version 1.9.1.9, Build 2022.03.27.