Each colour starts at the value shown. Wind colours match across all three units. Dry cells stay neutral. Colours describe the displayed values, not official weather warnings.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 06:00 14.9 95 31 17 5B S — — 1012 3090 Overcast 99% cloud 09:00 15.4 99 26 14 4B S 1.5 0 1011 3079 Overcast 100% cloud 12:00 15.6 98 23 12 4B SW 0.82 0 1011 3075 Overcast 100% cloud 15:00 16.5 92 22 12 4B SW 0.82 0 1011 3072 Partly cloudy 28% cloud 18:00 19.4 64 29 16 5B SW 0.22 0 1009 3068 Partly cloudy 49% cloud 21:00 18.9 62 22 12 4B SW 0.10 0 1009 3067 Clear 19% cloud Friday, 06/11 00:00 15.4 78 20 11 4B SW 0 0 1011 3074 Clear 0% cloud 03:00 13.6 82 21 11 4B W 0 0 1012 3069 Clear 0% cloud 06:00 11.7 82 18 10 3B W 0 0 1012 3062 Overcast 82% cloud 09:00 9.9 87 13 7 3B W 0 0 1012 3051 Cloudy 69% cloud 12:00 9 89 8 5 2B SW 0 0 1014 3044 Partly cloudy 33% cloud 15:00 13.1 68 15 8 3B W 0 0 1013 3038 Partly cloudy 28% cloud 18:00 14.7 54 18 9 3B W 0.01 0 1012 2910 Cloudy 77% cloud 21:00 12.6 70 17 9 3B W 0.05 0 1012 2672 Overcast 99% cloud Saturday, 07/11 00:00 9.6 92 21 11 4B NW 0.34 0 1014 2317 Overcast 100% cloud 03:00 6.1 88 28 15 4B NW 0.22 0 1016 2303 Cloudy 80% cloud 06:00 4.5 82 26 14 4B NW 0 0 1016 1852 Clear 7% cloud 09:00 2.7 90 26 14 4B NW 0 0 1016 1161 Partly cloudy 34% cloud 12:00 2.7 89 24 13 4B NW 0.02 0 1017 1051 Cloudy 50% cloud 15:00 4.4 68 29 15 4B W 0.05 0 1017 1083 Overcast 91% cloud 18:00 4.8 75 28 15 4B W 0.14 0 1016 1169 Overcast 97% cloud 21:00 4.9 80 31 17 5B W 0.25 0 1016 1268 Overcast 99% cloud Sunday, 08/11 00:00 4.7 91 34 18 5B W 0.09 0 1017 1593 Overcast 100% cloud 03:00 5 94 39 21 6B NW 0.30 0 1018 1984 Overcast 99% cloud 06:00 5 90 32 17 5B W 0.02 0 1018 1986 Overcast 98% cloud 09:00 4.8 86 29 16 4B W 0 0 1018 1864 Overcast 97% cloud 12:00 4.4 83 29 16 5B W 0 0 1018 3041 Overcast 81% cloud 15:00 5.8 68 32 17 5B W 0 0 1018 3048 Partly cloudy 48% cloud 18:00 9.5 49 28 15 4B W 0 0 1014 3032 Clear 0% cloud 21:00 10.2 47 29 16 5B W 0 0 1012 3017 Clear 6% cloud Monday, 09/11 00:00 8.4 53 39 21 5B W 0 0 1012 3010 Clear 2% cloud 03:00 7.2 63 34 18 5B W 0 0 1013 3003 Partly cloudy 49% cloud 06:00 6.1 81 33 18 5B W 0 0 1013 2995 Overcast 100% cloud 09:00 5.6 89 31 17 5B W 0.01 0 1014 1395 Overcast 100% cloud 12:00 4.6 91 32 17 5B NW 0.07 0 1015 1306 Overcast 99% cloud 15:00 6 75 40 21 6B NW 0.15 0 1017 1306 Overcast 99% cloud 18:00 6.9 66 37 20 5B NW 0.03 0 1017 1327 Overcast 92% cloud 21:00 7.3 61 30 16 5B NW 0 0 1018 1414 Cloudy 53% cloud Tuesday, 10/11 00:00 5.7 69 27 15 4B NW 0.02 0 1019 3059 Clear 5% cloud 03:00 5.2 76 28 15 4B NW 0 0 1019 3070 Clear 7% cloud 06:00 4.8 79 24 13 4B W 0 0 1018 3072 Partly cloudy 23% cloud 09:00 5.7 77 32 17 5B W 0 0 1018 3074 Cloudy 74% cloud 12:00 6.1 74 32 17 5B W 0 0 1017 3068 Cloudy 72% cloud 15:00 9.8 64 30 16 5B W 0 0 1016 3060 Partly cloudy 45% cloud 18:00 13.2 60 29 16 5B W 0 0 1013 3042 Clear 0% cloud 21:00 13.2 59 29 16 5B W 0 0 1013 3041 Clear 15% cloud Wednesday, 11/11 00:00 11.2 73 24 13 4B W 0 0 1014 3046 Cloudy 76% cloud 03:00 9 85 17 9 3B W 0 0 1015 3047 Partly cloudy 28% cloud 06:00 6.8 93 13 7 3B W 0 0 1016 3043 Partly cloudy 26% cloud |
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Forecast table times: UTC.
Coordinates: 40.2989875°N, -78.5542855°E · Requested elevation: 650 m. Model terrain: 545 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) uses additional 600/500 hPa temperatures when available and estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.

Blue Knob is a downhill ski area in Pennsylvania, United States. Mapped terrain includes easy, intermediate, advanced, expert routes. Its mapped lift network extends from approximately 650 to 961 metres above sea level.
Data: OpenSkiData / OpenSkiMap, OpenStreetMap contributors (ODbL), Skimap.org, Who's On First, Mapterhorn.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 06:00 14.9 95 31 17 5B S — — 1012 3090 Overcast 99% cloud 09:00 15.4 99 26 14 4B S 1.5 0 1011 3079 Overcast 100% cloud 12:00 15.6 98 23 12 4B SW 0.82 0 1011 3075 Overcast 100% cloud 15:00 16.5 92 22 12 4B SW 0.82 0 1011 3072 Partly cloudy 28% cloud 18:00 19.4 64 29 16 5B SW 0.22 0 1009 3068 Partly cloudy 49% cloud 21:00 18.9 62 22 12 4B SW 0.10 0 1009 3067 Clear 19% cloud Friday, 06/11 00:00 15.4 78 20 11 4B SW 0 0 1011 3074 Clear 0% cloud 03:00 13.6 82 21 11 4B W 0 0 1012 3069 Clear 0% cloud 06:00 11.7 82 18 10 3B W 0 0 1012 3062 Overcast 82% cloud 09:00 9.9 87 13 7 3B W 0 0 1012 3051 Cloudy 69% cloud 12:00 9 89 8 5 2B SW 0 0 1014 3044 Partly cloudy 33% cloud 15:00 13.1 68 15 8 3B W 0 0 1013 3038 Partly cloudy 28% cloud 18:00 14.7 54 18 9 3B W 0.01 0 1012 2910 Cloudy 77% cloud 21:00 12.6 70 17 9 3B W 0.05 0 1012 2672 Overcast 99% cloud Saturday, 07/11 00:00 9.6 92 21 11 4B NW 0.34 0 1014 2317 Overcast 100% cloud 03:00 6.1 88 28 15 4B NW 0.22 0 1016 2303 Cloudy 80% cloud 06:00 4.5 82 26 14 4B NW 0 0 1016 1852 Clear 7% cloud 09:00 2.7 90 26 14 4B NW 0 0 1016 1161 Partly cloudy 34% cloud 12:00 2.7 89 24 13 4B NW 0.02 0 1017 1051 Cloudy 50% cloud 15:00 4.4 68 29 15 4B W 0.05 0 1017 1083 Overcast 91% cloud 18:00 4.8 75 28 15 4B W 0.14 0 1016 1169 Overcast 97% cloud 21:00 4.9 80 31 17 5B W 0.25 0 1016 1268 Overcast 99% cloud Sunday, 08/11 00:00 4.7 91 34 18 5B W 0.09 0 1017 1593 Overcast 100% cloud 03:00 5 94 39 21 6B NW 0.30 0 1018 1984 Overcast 99% cloud 06:00 5 90 32 17 5B W 0.02 0 1018 1986 Overcast 98% cloud 09:00 4.8 86 29 16 4B W 0 0 1018 1864 Overcast 97% cloud 12:00 4.4 83 29 16 5B W 0 0 1018 3041 Overcast 81% cloud 15:00 5.8 68 32 17 5B W 0 0 1018 3048 Partly cloudy 48% cloud 18:00 9.5 49 28 15 4B W 0 0 1014 3032 Clear 0% cloud 21:00 10.2 47 29 16 5B W 0 0 1012 3017 Clear 6% cloud Monday, 09/11 00:00 8.4 53 39 21 5B W 0 0 1012 3010 Clear 2% cloud 03:00 7.2 63 34 18 5B W 0 0 1013 3003 Partly cloudy 49% cloud 06:00 6.1 81 33 18 5B W 0 0 1013 2995 Overcast 100% cloud 09:00 5.6 89 31 17 5B W 0.01 0 1014 1395 Overcast 100% cloud 12:00 4.6 91 32 17 5B NW 0.07 0 1015 1306 Overcast 99% cloud 15:00 6 75 40 21 6B NW 0.15 0 1017 1306 Overcast 99% cloud 18:00 6.9 66 37 20 5B NW 0.03 0 1017 1327 Overcast 92% cloud 21:00 7.3 61 30 16 5B NW 0 0 1018 1414 Cloudy 53% cloud Tuesday, 10/11 00:00 5.7 69 27 15 4B NW 0.02 0 1019 3059 Clear 5% cloud 03:00 5.2 76 28 15 4B NW 0 0 1019 3070 Clear 7% cloud 06:00 4.8 79 24 13 4B W 0 0 1018 3072 Partly cloudy 23% cloud 09:00 5.7 77 32 17 5B W 0 0 1018 3074 Cloudy 74% cloud 12:00 6.1 74 32 17 5B W 0 0 1017 3068 Cloudy 72% cloud 15:00 9.8 64 30 16 5B W 0 0 1016 3060 Partly cloudy 45% cloud 18:00 13.2 60 29 16 5B W 0 0 1013 3042 Clear 0% cloud 21:00 13.2 59 29 16 5B W 0 0 1013 3041 Clear 15% cloud Wednesday, 11/11 00:00 11.2 73 24 13 4B W 0 0 1014 3046 Cloudy 76% cloud 03:00 9 85 17 9 3B W 0 0 1015 3047 Partly cloudy 28% cloud 06:00 6.8 93 13 7 3B W 0 0 1016 3043 Partly cloudy 26% cloud |
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Forecast table times: UTC.
Coordinates: 40.2989875°N, -78.5542855°E · Requested elevation: 650 m. Model terrain: 545 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) uses additional 600/500 hPa temperatures when available and estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.
Preparing forecast graphs…
Times and values match the detailed forecast. Tap or point at a value for details. Scroll each chart sideways for later days. Rain / precipitation is the total water equivalent per forecast interval, including snow; snowfall is fresh snow per interval, not snow depth.
GFS and ECMWF model comparison. Each model retains its own forecast times and horizon. Precipitation and snowfall amounts cover their own forecast intervals; these can differ between models.
ECMWF · Model run: Next update expected:
Day Time (UTC) Temp. (°C) Humidity (%) Wind (km/h) Wind (knots) Wind (Bft) Direction Precip. (mm) Snow (cm) Pressure (hPa) Freezing (m) Conditions | Thursday, 05/11 06:00 14.5 91 50 27 7B S — — 1012 3090 Overcast 99% cloud 09:00 14.6 97 45 24 6B SW 1.5 0 1011 3079 Overcast 100% cloud 12:00 14.5 98 40 22 6B SW 0.84 0 1011 3075 Overcast 100% cloud 15:00 14.5 92 36 19 5B SW 0.84 0 1011 3072 Partly cloudy 28% cloud 18:00 16 74 39 21 6B SW 0.22 0 1009 3069 Partly cloudy 49% cloud 21:00 15.8 71 30 16 5B SW 0.10 0 1009 3067 Clear 19% cloud Friday, 06/11 00:00 14.5 72 37 20 5B SW 0 0 1011 3074 Clear 0% cloud 03:00 13 74 39 21 6B W 0 0 1012 3069 Clear 0% cloud 06:00 11.5 67 36 20 5B W 0 0 1012 3062 Overcast 83% cloud 09:00 9.6 76 29 15 4B W 0 0 1012 3051 Cloudy 69% cloud 12:00 8.6 82 20 11 4B W 0 0 1014 3045 Partly cloudy 33% cloud 15:00 9.6 77 24 13 4B W 0 0 1013 3038 Partly cloudy 27% cloud 18:00 11 65 22 12 4B W 0.00 0 1012 2912 Cloudy 77% cloud 21:00 9.8 77 21 11 4B W 0.06 0 1012 2675 Overcast 99% cloud Saturday, 07/11 00:00 7.5 95 28 15 4B NW 0.34 0 1014 2321 Overcast 100% cloud 03:00 4.5 89 33 18 5B NW 0.24 0 1016 2307 Cloudy 80% cloud 06:00 2.8 79 37 20 5B W 0 0 1016 1843 Clear 7% cloud 09:00 1 86 41 22 6B NW 0 0 1016 1163 Partly cloudy 32% cloud 12:00 0.5 88 35 19 5B NW 0.03 0 1017 1051 Cloudy 50% cloud 15:00 1 81 37 20 5B W 0.04 0 1018 1083 Overcast 91% cloud 18:00 1.6 84 39 21 6B W 0.13 0 1016 1169 Overcast 97% cloud 21:00 2.3 88 46 25 6B W 0.25 0 1016 1268 Overcast 99% cloud Sunday, 08/11 00:00 2.7 96 57 31 7B NW 0.10 0 1017 1598 Overcast 100% cloud 03:00 3.4 95 61 33 7B NW 0.30 0 1018 1983 Overcast 99% cloud 06:00 3.3 92 49 26 6B NW 0.03 0 1018 1979 Overcast 98% cloud 09:00 2.7 92 45 24 6B NW 0 0 1018 1863 Overcast 97% cloud 12:00 3.7 69 44 24 6B W 0 0 1018 3041 Overcast 81% cloud 15:00 4.2 56 48 26 6B W 0 0 1018 3049 Partly cloudy 49% cloud 18:00 7 41 47 25 6B W 0 0 1014 3032 Clear 0% cloud 21:00 7.9 42 52 28 7B W 0 0 1012 3017 Clear 6% cloud Monday, 09/11 00:00 6.4 58 65 35 8B W 0 0 1012 3011 Clear 2% cloud 03:00 5 73 57 31 7B W 0 0 1013 3003 Partly cloudy 48% cloud 06:00 4 87 54 29 7B W 0 0 1013 2995 Overcast 100% cloud 09:00 3.1 95 52 28 7B NW 0.00 0 1014 1395 Overcast 100% cloud 12:00 2.3 94 53 29 7B NW 0.08 0 1015 1306 Overcast 99% cloud 15:00 2.9 86 56 30 7B NW 0.15 0 1017 1306 Overcast 99% cloud 18:00 3.4 78 50 27 6B NW 0.03 0 1017 1328 Overcast 92% cloud 21:00 4.3 71 41 22 6B NW 0 0 1018 1415 Cloudy 54% cloud Tuesday, 10/11 00:00 4.4 67 47 26 6B NW 0.02 0 1019 3059 Clear 5% cloud 03:00 5 64 50 27 6B NW 0 0 1019 3071 Clear 7% cloud 06:00 6 54 44 24 6B W 0 0 1018 3072 Partly cloudy 23% cloud 09:00 6.8 51 52 28 7B W 0 0 1018 3074 Cloudy 74% cloud 12:00 6.8 49 54 29 7B W 0 0 1017 3068 Cloudy 71% cloud 15:00 7.8 56 47 26 6B W 0 0 1016 3060 Partly cloudy 44% cloud 18:00 10.2 65 46 25 6B W 0 0 1013 3043 Clear 0% cloud 21:00 10.3 65 46 25 6B W 0 0 1013 3042 Clear 13% cloud Wednesday, 11/11 00:00 9.1 79 43 23 6B W 0 0 1014 3046 Cloudy 76% cloud 03:00 7.7 85 34 19 5B W 0 0 1015 3047 Partly cloudy 29% cloud 06:00 6.7 84 27 15 4B W 0 0 1016 3043 Partly cloudy 26% cloud |
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Forecast table times: UTC.
Coordinates: 40.2889385°N, -78.5627398°E · Requested elevation: 961 m. Model terrain: 549 m. Terrain and 1000/925/850/700 hPa profiles are used for height estimates.
These are altitude estimates, not a simulation of local mountain terrain. Precipitation, cloud and sea-level pressure use horizontal interpolation only.
Precipitation includes rain and snow water equivalent: preceding 3 hours through day 6, then 6 hours (see cell tooltip). Snow (cm) estimates fresh snowfall from precipitation and temperature using the GFS conversion; it is not snow depth on the ground. Freezing (m) uses additional 600/500 hPa temperatures when available and estimates the lowest resolved 0°C crossing above sea level. When all sampled levels are warm, the upper profile limit is shown (see tooltip). < marks an entirely cold sampled profile and its lower height limit. No extrapolation is used.