15 September 2025 Observation History, [CYSN] NIAGARA DISTRICT, timezone: America/Toronto
| Time | Wind (mph) |
Vis. (mi.) |
Sky Cond. (100s ft) |
Present Wx | Temperature (ºF) | Relative Humidity |
Pressure | Snow Depth (in) |
Precipitation (in.) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Air | Dwpt | Feels Like | 6 hour | altimeter (in.) |
sea level (mb) |
1 hr | 3 hr | 6 hr | ||||||||
| Max. | Min. | |||||||||||||||
| 7:00 AM | Calm | 15 | FEW250 | MIFG | 52 | 52 | 52 | 100 | 30.24 | 1024.4 | 0 | |||||
| CYSN 151100Z 00000KT 15SM MIFG FEW250 11/11 A3024 RMK CI2 SLP244 | ||||||||||||||||
| 8:00 AM | ESE 2 | 15 | SCT250 | 54 | 54 | 54 | 100 | 30.27 | 1025.2 | 0 | ||||||
| CYSN 151200Z 12002KT 15SM SCT250 12/12 A3027 RMK CI4 SLP252 | ||||||||||||||||
| 9:00 AM | ENE 5 | 15 | SCT250 | 64 | 61 | 64 | 88 | 30.28 | 1025.6 | 0 | ||||||
| CYSN 151300Z 07004KT 15SM SCT250 18/16 A3028 RMK CI3 SLP256 | ||||||||||||||||
| 10:00 AM | E 8 | 15 | SCT250 | 70 | 59 | 70 | 69 | 30.28 | 1025.5 | 0 | ||||||
| CYSN 151400Z 10007KT 15SM SCT250 21/15 A3028 RMK CI3 SLP255 DENSITY ALT 700FT | ||||||||||||||||
| 11:00 AM | NE 6 | 15 | SCT250 | 73 | 59 | 73 | 61 | 30.28 | 1025.6 | 0 | ||||||
| CYSN 151500Z 05005KT 030V100 15SM SCT250 23/15 A3028 RMK CI4 SLP256 DENSITY ALT 900FT | ||||||||||||||||
| 12:00 PM | N 9 | 15 | FEW030 SCT250 | 73 | 61 | 73 | 65 | 30.27 | 1025.4 | 0 | ||||||
| CYSN 151600Z 01008KT 330V090 15SM FEW030 SCT250 23/16 A3027 RMK CU1CI3 SLP254 DENSITY ALT 1000FT | ||||||||||||||||
| 1:00 PM | NNE 10 | 15 | FEW035 BKN250 | 75 | 64 | 75 | 69 | 30.27 | 1025.2 | 0 | ||||||
| CYSN 151700Z 02009KT 15SM FEW035 BKN250 24/18 A3027 RMK SC1CI4 SLP252 DENSITY ALT 1100FT | ||||||||||||||||
| 2:00 PM | NNE 13 | 15 | FEW040 BKN250 | 73 | 64 | 73 | 73 | 30.26 | 1024.9 | 0 | ||||||
| CYSN 151800Z 02011KT 15SM FEW040 BKN250 23/18 A3026 RMK SC1CI4 SLP249 DENSITY ALT 1000FT | ||||||||||||||||
| 3:00 PM | NNE 13G21 | 15 | FEW040 BKN250 | 73 | 63 | 73 | 69 | 30.25 | 1024.6 | 0 | ||||||
| CYSN 151900Z 02011G18KT 15SM FEW040 BKN250 23/17 A3025 RMK SC1CI4 SLP246 DENSITY ALT 1000FT | ||||||||||||||||
| 4:00 PM | NNE 14 | 15 | BKN250 | 73 | 57 | 73 | 57 | 30.24 | 1024.2 | 0 | ||||||
| CYSN 152000Z 03012KT 15SM BKN250 23/14 A3024 RMK CI4 SLP242 DENSITY ALT 1000FT | ||||||||||||||||
| 4:00 PM | NNE 14 | 15 | SCT250 | 73 | 57 | 73 | 57 | 30.24 | 1024.2 | 0 | ||||||
| CYSN 152000Z CCA 03012KT 15SM SCT250 23/14 A3024 RMK CI4 SLP242 DENSITY ALT 1000FT | ||||||||||||||||
| 5:00 PM | NE 14 | 15 | SCT250 | 72 | 55 | 72 | 57 | 30.23 | 1024 | 0 | ||||||
| CYSN 152100Z 05012KT 15SM SCT250 22/13 A3023 RMK CI3 SLP240 DENSITY ALT 1000FT | ||||||||||||||||
| 6:00 PM | NE 9 | 15 | FEW250 | 72 | 55 | 72 | 57 | 30.24 | 1024.1 | 0 | ||||||
| CYSN 152200Z 04008KT 15SM FEW250 22/13 A3024 RMK CI1 SLP241 DENSITY ALT 900FT | ||||||||||||||||
| 7:00 PM | ENE 8 | 15 | FEW250 | 68 | 54 | 68 | 60 | 30.24 | 1024.2 | 0 | ||||||
| CYSN 152300Z 06007KT 15SM FEW250 20/12 A3024 RMK CI1 SLP242 DENSITY ALT 700FT | ||||||||||||||||
| 8:00 PM | ENE 6 | 15 | CLR | 64 | 54 | 64 | 68 | 30.24 | 1024.1 | 0 | ||||||
| CYSN 160000Z 06005KT 15SM SKC 18/12 A3024 RMK SLP241 | ||||||||||||||||
| 9:00 PM | ENE 2 | 15 | CLR | 59 | 54 | 59 | 82 | 30.24 | 1024.2 | 0 | ||||||
| CYSN 160100Z 07002KT 15SM SKC 15/12 A3024 RMK LAST STFD OBS/NXT 161100Z SLP242 | ||||||||||||||||
API: The IEM API webservice that provided data to this page. For more details, see documentation.
Data Notes
- For recent years, this page also optionally shows observations from the MADIS High Frequency METAR dataset. This dataset had a problem with temperatures detailed here.