Ski Report

Prospect Hill snow report

Massachusetts, United States Waltham
⚠ Heat Advisory · Heat Advisory issued May 19 at 2:02PM EDT until May 20 at 8:00PM EDT by NWS Boston/Norton MA
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As of 2026-05-05
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Prospect Hill -- Massachusetts ski resort
Prospect Hill Massachusetts · Waltham
About this resort

Prospect Hill

Prospect Hill Ski Resort in Massachusetts offers over 50 acres of skiing terrain for all levels. The best trails for advanced skiers are the "Ramp" and the "Mogul Mash," while beginners should try "Bunny Slope" and "Lollipop." One interesting fact about the resort is that it was originally a landfill that was converted into a ski area in the 1960s. For beginners, we suggest taking a lesson with one of the resort's experienced instructors. As for apres ski, head to the Black Diamond Restaurant and Bar for a cozy atmosphere and delicious pub fare.

Terrain mix: The Prospect Hill Ski Resort in Massachusetts is located in the Berkshire Mountains region. Some of the pertinent mountain ranges and mountain aspects of the resort include:

1. Berkshire Mountains: The resort is situated in the Berkshire Mountains, a range known for its beautiful scenery and outdoor recreational opportunities.

2. Ski Slopes: Prospect Hill Ski Resort features a variety of ski slopes with different levels of difficulty, making it suitable for skiers of all skill levels.

3. Snowmaking: The resort has snowmaking capabilities to ensure optimal skiing conditions throughout the winter season.

4. Elevation: The elevation of Prospect Hill Ski Resort contributes to its challenging terrain and stunning views of the surrounding mountain ranges.

5. Terrain Parks: The resort also offers terrain parks for snowboarders and freestyle skiers to practice their skills and tricks.

Overall, Prospect Hill Ski Resort offers a range of mountain aspects and features that make it a popular destination for winter sports enthusiasts in Massachusetts.

StateMassachusetts
LocationWaltham
Base elevation157 ft
Summit elevation400 ft
Skiable acreage7 acres
Lifts2
Runs3
Opened1977
Night skiingYes
Detailed forecast

Plan your day down to the hour

Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no. Watch the snow column the morning of a storm to know when to call in sick.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & snow

Daily temperatures, snow, and rain projected over the next two weeks -- start of next storm cycle, end of last one.

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Forecast discussion

What forecasters are seeing

Plain-English forecast narrative from the local NWS office. Issued by NWS BOX.

580 FXUS61 KBOX 190556 AFDBOX Area Forecast Discussion National Weather Service Boston/Norton MA 156 AM EDT Tue May 19 2026 .WHAT HAS CHANGED... Small Craft Advisory extended into Wednesday night for the southern outer waters. && .KEY MESSAGES... - Record heat possible Tuesday with marginal humidity, kicking off a multi-day stretch of anomalously hot temperatures (in the mid to upper 90s away from the South Coast). - Isolated thunderstorms possible today, mainly north and west of I- 95. Better chances for strong to severe thunderstorms on Wednesday with strong damaging winds the main risk. - Cooler and unsettled weather is possible Memorial Day Weekend, but confidence remains low. && .DISCUSSION... KEY MESSAGE 1...Record heat possible Tuesday with marginal humidity, kicking off a multi-day stretch of anomalously hot temperatures (in the mid to upper 90s away from the South Coast). A Heat Advisory remains in effect for much of southern New England on Tuesday and Wednesday, not necessarily because of the expectation for an exceptionally oppressive heat/humidity combo but due to a very early arrival of well above normal heat for mid May in southern New England. This anomalously warm airmass comes courtesy of a building mid level ridge today pushing 850 mb temps into the 18-20C range which wold be 2-3 SD above climatology. Given an expected well mixed boundary layer surface temperatures should be able to reach well into the 90s. Warmest locations will be the CT and Merrimack valleys where downslope flow will help push temps into the mid 90s with low to mid 90s elsewhere. The exception will be along the south coast where that SW wind trajectory off of the ocean keeps temps comfortably in the mid 70s. The ridge begins to break down on Wednesday with falling heights, but even so temps will remain elevated ahead of the cold front; increasing cloud cover ahead of the surface trough will help keep temps a few degrees cooler, but many locations inland still see low to mid 90s away from the water. Dewpoints in the low to mid 60s (discounting the outlier NAM) will make it feel humid but not tropical by any means. KEY MESSAGE 2...Isolated thunderstorms possible today, mainly north and west of I-95. Better chances for strong to severe thunderstorms on Wednesday with strong damaging winds the main risk. When it comes to thunderstorm threat each day, Wednesday looks to be the more favorable day for strong to severe storm coverage because while both days feature the necessary moisture and instability, the lift mechanism is much more robust on Wednesday (the cold front). Those elevated temps and dewpoints will contribute to instability values on the order of 1000-1500 J/kg of surface based CAPE each day while dewpoints are in the low to mid 60s as previously mentioned. 0- 6km bulk shear values, while fine (25-30 kts), are less favorable for organized severe weather than they are further north where the stronger mid level flow resides. So, the ingredients are there for some strong to severe storms. The lifting mechanism is much less robust on Tuesday, but guidance indicates a weak surface trough and mid level shortwave which will likely be enough to kick off some storms. Despite very strong low level lapse rates, the longevity and strength/height of these storms will be limited by poor mid level lapse rates. Wednesday the cold front will serve as a better lifting mechanism, timed coincident with peak diurnal heating so would expect more coverage of storms and any storms that do form have the chance to produce strong to damaging winds primarily given inverted- v soundings. KEY MESSAGE 3...Cooler and unsettled weather is possible Memorial Day Weekend, but confidence remains low. After high pressure delivers dry and seasonable weather to end the week, attention turns to the holiday weekend. Unfortunately it`s not a cut-and-dry forecast at this point (5-7 days out) as guidance remains in two distinct camps. One would result in a cool (or downright cold for late May) and wet weekend while another keeps things dry and seasonable. Up to this point deterministic guidance has indicated a rainy Sat/Sun ahead of a low coming out of the OH Valley while the AI guidance like the AIGFS and ECMWF AIFS keep it suppressed to the south by high pressure, at least through Sunday. Obviously this would have a big impact on the weekend, with respect to both rain and temperatures. For what it`s worth, the latest GFS guidance has shown that suppression to the south as well, but can`t put any confidence in an individual run. Ensemble guidance continues to show a decent chance of rain for the weekend. && .AVIATION /06Z TUESDAY THROUGH SATURDAY/... Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. 06Z TAF Update: Through 12z...High confidence. VFR, but IFR to LIFR in stratus and fog for Cape Cod and island terminals through at least 11z. LLWS risk for all terminals tonight heading into early tomorrow morning. S-SW wind 5 to 10 kt. Tuesday and Tuesday Night...High confidence. VFR. Iso`d TSRA possible by the afternoon, but uncertain on if they will impact any terminals. S-SW wind 8 to 12 kt, gusts to 25 kt developing. VFR overnight, with MVFR ceilings across the Cape and Islands. Wednesday...High confidence. VFR. Scattered TSRA along and ahead of a cold front in the afternoon and evening. S-SW wind 8-10kt with gusts 20-25 kts turning NW behind the cold front between 15-00Z. Strong gusts possible in any thunderstorms. KBOS...High confidence in TAF. KBDL...High confidence in TAF. Outlook /Wednesday night through Saturday/... Wednesday Night: VFR. Breezy. Thursday through Friday: VFR. Friday Night: VFR. Chance SHRA. Saturday: Mainly VFR, with local IFR possible. SHRA likely. && .MARINE... Forecaster Confidence Levels... Low - less than 30 percent. Moderate - 30 to 60 percent. High - greater than 60 percent. Through Wednesday: High confidence. Small craft advisories remain in effect 12z Tuesday through Wednesday evening. SW winds will be increasing to around 15-25 kt Tuesday and remain so through Wednesday, higher over the southern waters. Seas will also be building to around 4-6 ft, with some 7 footers possible Tuesday night over the southern waters. Mainly dry weather prevails through Tuesday night, although fog may develop both tonight and Tuesday night. Outlook /Wednesday through Saturday/... Wednesday: Low risk for Small Craft Advisory winds with gusts up to 25 kt. Local rough seas. Chance of rain showers, isolated thunderstorms. Wednesday Night: Winds less than 25 kt. Areas of seas approaching 5 ft. Chance of rain showers. Thursday: Winds less than 25 kt. Seas locally approaching 5 ft. Thursday Night through Friday: Winds less than 25 kt. Friday Night: Winds less than 25 kt. Chance of rain showers. Saturday: Winds less than 25 kt. Rain showers likely. && .CLIMATE... Record Highs for Tue May 19... BOS 90/1949 BDL 94/1962 PVD 91/2017 ORH 92/1962 Record Highs for Wed May 20... BOS 91/1996 BDL 99/1996 PVD 95/1996 ORH 91/1903 && .BOX WATCHES/WARNINGS/ADVISORIES... CT...Heat Advisory from 11 AM this morning to 8 PM EDT Wednesday for CTZ002>004. Air Quality Alert from 11 AM this morning to 11 PM EDT this evening for CTZ003-004. MA...Heat Advisory from 11 AM this morning to 8 PM EDT Wednesday for MAZ003>007-010>019-026. Air Quality Alert from 11 AM this morning to 11 PM EDT this evening for MAZ006-007-013>019. RI...Heat Advisory from 11 AM this morning to 8 PM EDT Wednesday for RIZ001>004. Air Quality Alert from 11 AM this morning to 11 PM EDT this evening for RIZ001>008. MARINE...Small Craft Advisory from 11 AM this morning to 8 PM EDT Wednesday for ANZ254>256. && $$ DISCUSSION...BW AVIATION...BW MARINE...BW CLIMATE...BW

Mountain & avalanche safety

Know before you go
Check today's avalanche bulletin from the regional avalanche center before any off-piste / side-country / backcountry travel. Conditions can shift dramatically between morning and afternoon on storm days.
Carry the gear, know how to use it
Beacon, shovel, probe. Practice companion rescue on a calm day, not during a real burial.
Mind the weather window
Heavy snow + wind builds wind slabs at ridgelines. The day after a storm is often the riskiest in the backcountry, even if the resort itself is open.
Respect closed terrain
Ropes are there for a reason. Even in-bounds, ducking a closure can trigger a slide that catches you and others below.

Track Prospect Hill in the Snoflo app

Save this resort as a favorite, set push alerts when snowfall crosses a threshold (e.g. "alert me when Prospect Hill reports 6″ new"), and Snoflo's iOS app will push the moment the SNOTEL station crosses.

FAQ

About Prospect Hill

Where does the snow data for Prospect Hill come from?

Snowpack, SWE, 24-hour snowfall, and air temperature come from the nearest USDA NRCS SNOTEL station. Forecast comes from the National Weather Service / yr.no feed that Snoflo's iOS app uses.

How often is the snow report updated?

Snowpack and SNOTEL data are updated continuously by NRCS (typically hourly). The 15-day weather forecast is refreshed throughout the day. Snoflo caches and renders the most recent observation -- look for the "as of" timestamp on the snowpack hero.

What's the elevation at Prospect Hill?

See the Resort Metrics panel above for base / summit / vertical drop. The summit elevation drives snowpack accumulation -- higher summits hold snow longer through spring.

How is "% of normal" calculated?

Today's snowpack is compared to the average snowpack on this calendar day across every recorded year at the nearest SNOTEL. 100% means right on average; 130% is a big year; 60% is thin.

What ski resorts are near Prospect Hill?

See the Other Ski Areas pill grid at the bottom of the page for resorts within driving distance. The sister Other Ski Areas card in the Plan-a-longer-trip grid above shows the closest few.

Can I get alerts when fresh snow hits?

Yes -- snow alerts are managed in the Snoflo iOS app. Favorite this resort, set a snowfall threshold (e.g. "alert me when 6+ inches"), and you'll get a push the moment the SNOTEL crosses.

More ski areas

Other resorts near here

Snoflo-tracked ski areas within driving distance of Prospect Hill.