{"source":"kalshi","id":"KXLOWTBOS-26MAY31","ticker":"KXLOWTBOS-26MAY31","slug":"KXLOWTBOS-26MAY31","title":"Lowest temperature in Boston on May 31, 2026?","description":null,"image":null,"icon":null,"active":true,"closed":false,"start_date":"2026-05-30T14:00:00Z","end_date":"2026-06-07T14:00:00Z","closed_time":null,"volume":1755.58,"volume_24hr":1755.58,"volume_24h_change":null,"normalized_vol_24hr":18.33211898803711,"normalized_volume":15.049424171447754,"liquidity":null,"open_interest":1639.5,"categories":["Climate and Weather"],"tags":[],"synthetic":false,"is_group":false,"group_key":null,"parent_event_id":null,"probability":null,"spread":null,"top_outcome":"44° or above","top_outcome_probability":0.68,"top_outcome_prob_24h_change":0.09000000000000008,"top_outcome_volume_24h_change":607.58,"updated_at":"2026-05-31T00:42:24.857180Z","fetched_at":"2026-05-31T00:42:24.857180Z","added_at":"2026-05-30T14:08:36.607957Z","url":"https://kalshi.com/markets/kxlowtbos/lowest-temperature-in-boston-on-may-31-2026/kxlowtbos-26may31","chart_24h":[1.0,319.0,350.0,384.0,688.0,1356.3600000000001,1357.3600000000001,1484.37,1485.7,1485.7,1491.7,1615.94,1617.94,1745.6399999999999,1755.58],"markets":[{"source":"kalshi","id":"KXLOWTBOS-26MAY31-T43","event_id":"KXLOWTBOS-26MAY31","slug":"KXLOWTBOS-26MAY31-T43","question":"Will the minimum temperature be >43° on May 31, 2026?","group_item_title":"44° or above","description":"If the minimum temperature recorded at Boston for May 31, 2026, is greater than 43° fahrenheit according to the National Weather Service's Climatological Report (Daily), then the market resolves to Yes.\n\n---\n\nData for CLIBOS can be found by clicking the following URL: https://www.weather.gov/wrh/climate?wfo=box, navigating to the \"Observed Weather\" tab, and choosing the location \"Boston (Logan Airport), MA\" with Daily Climate Report selected. Please use the latest version of the data for the desired date, keeping in mind that different cities update their reports at different frequencies.\n\nNot all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the maximum/minimum temperature as reported by the corresponding NWS Climatological Report (Daily) linked in the rules above. Preliminary NWS reporting and measurement methods may be subject to underlying rounding and conversion nuances. Traders should exercise caution when interpreting preliminary NWS data.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.68,0.31999999999999995],"probability":0.68,"spread":0.019999999999999907,"active":true,"closed":false,"start_date":"2026-05-30T14:00:00Z","end_date":"2026-06-07T14:00:00Z","closed_time":"2026-06-01T05:00:00Z","volume":608.58,"volume_24hr":608.58,"prob_24h_change":0.09000000000000008,"volume_24h_change":607.58,"normalized_vol_24hr":14.139023780822754,"normalized_volume":13.34341812133789,"liquidity":null,"categories":["Climate and Weather"],"updated_at":"2026-05-31T01:09:56.530789Z","fetched_at":"2026-05-31T01:09:56.530789Z","added_at":"2026-05-30T14:08:36.729359Z","url":"https://kalshi.com/markets/kxlowtbos/lowest-temperature-in-boston-on-may-31-2026/kxlowtbos-26may31","event_title":"Lowest temperature in Boston on May 31, 2026?","chart_24h":[0.59,0.57,0.65,0.63,0.63,0.68,0.68,0.67,0.67,0.7,0.68,0.8,0.66,0.71,0.71,0.68]},{"source":"kalshi","id":"KXLOWTBOS-26MAY31-B42.5","event_id":"KXLOWTBOS-26MAY31","slug":"KXLOWTBOS-26MAY31-B42.5","question":"Will the minimum temperature be 42-43° on May 31, 2026?","group_item_title":"42° to 43°","description":"If the minimum temperature recorded at Boston for May 31, 2026, is between 42-43° fahrenheit according to the National Weather Service's Climatological Report (Daily), then the market resolves to Yes.\n\n---\n\nData for CLIBOS can be found by clicking the following URL: https://www.weather.gov/wrh/climate?wfo=box, navigating to the \"Observed Weather\" tab, and choosing the location \"Boston (Logan Airport), MA\" with Daily Climate Report selected. Please use the latest version of the data for the desired date, keeping in mind that different cities update their reports at different frequencies.\n\nNot all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the maximum/minimum temperature as reported by the corresponding NWS Climatological Report (Daily) linked in the rules above. Preliminary NWS reporting and measurement methods may be subject to underlying rounding and conversion nuances. Traders should exercise caution when interpreting preliminary NWS data.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.16,0.84],"probability":0.16,"spread":0.03999999999999998,"active":true,"closed":false,"start_date":"2026-05-30T14:00:00Z","end_date":"2026-06-07T14:00:00Z","closed_time":"2026-06-01T05:00:00Z","volume":90.0,"volume_24hr":90.0,"prob_24h_change":0.16,"volume_24h_change":90.0,"normalized_vol_24hr":6.995949745178223,"normalized_volume":6.602285861968994,"liquidity":null,"categories":["Climate and Weather"],"updated_at":"2026-05-31T01:09:56.530789Z","fetched_at":"2026-05-31T01:09:56.530789Z","added_at":"2026-05-30T14:08:36.729359Z","url":"https://kalshi.com/markets/kxlowtbos/lowest-temperature-in-boston-on-may-31-2026/kxlowtbos-26may31","event_title":"Lowest temperature in Boston on May 31, 2026?","chart_24h":[0.0,0.37,0.37,0.37,0.37,0.37,0.25,0.25,0.25,0.16,0.16,0.16,0.16]},{"source":"kalshi","id":"KXLOWTBOS-26MAY31-B36.5","event_id":"KXLOWTBOS-26MAY31","slug":"KXLOWTBOS-26MAY31-B36.5","question":"Will the minimum temperature be 36-37° on May 31, 2026?","group_item_title":"36° to 37°","description":"If the minimum temperature recorded at Boston for May 31, 2026, is between 36-37° fahrenheit according to the National Weather Service's Climatological Report (Daily), then the market resolves to Yes.\n\n---\n\nData for CLIBOS can be found by clicking the following URL: https://www.weather.gov/wrh/climate?wfo=box, navigating to the \"Observed Weather\" tab, and choosing the location \"Boston (Logan Airport), MA\" with Daily Climate Report selected. Please use the latest version of the data for the desired date, keeping in mind that different cities update their reports at different frequencies.\n\nNot all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the maximum/minimum temperature as reported by the corresponding NWS Climatological Report (Daily) linked in the rules above. Preliminary NWS reporting and measurement methods may be subject to underlying rounding and conversion nuances. Traders should exercise caution when interpreting preliminary NWS data.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.02,"active":true,"closed":false,"start_date":"2026-05-30T14:00:00Z","end_date":"2026-06-07T14:00:00Z","closed_time":"2026-06-01T05:00:00Z","volume":371.0,"volume_24hr":371.0,"prob_24h_change":0.01,"volume_24h_change":371.0,"normalized_vol_24hr":12.045065879821777,"normalized_volume":11.367287635803223,"liquidity":null,"categories":["Climate and Weather"],"updated_at":"2026-05-30T17:45:09.317958Z","fetched_at":"2026-05-30T17:44:31.281284Z","added_at":"2026-05-30T14:08:36.729359Z","url":"https://kalshi.com/markets/kxlowtbos/lowest-temperature-in-boston-on-may-31-2026/kxlowtbos-26may31","event_title":"Lowest temperature in Boston on May 31, 2026?","chart_24h":[0.0,0.0,0.02,0.01,0.01]},{"source":"kalshi","id":"KXLOWTBOS-26MAY31-B38.5","event_id":"KXLOWTBOS-26MAY31","slug":"KXLOWTBOS-26MAY31-B38.5","question":"Will the minimum temperature be 38-39° on May 31, 2026?","group_item_title":"38° to 39°","description":"If the minimum temperature recorded at Boston for May 31, 2026, is between 38-39° fahrenheit according to the National Weather Service's Climatological Report (Daily), then the market resolves to Yes.\n\n---\n\nData for CLIBOS can be found by clicking the following URL: https://www.weather.gov/wrh/climate?wfo=box, navigating to the \"Observed Weather\" tab, and choosing the location \"Boston (Logan Airport), MA\" with Daily Climate Report selected. Please use the latest version of the data for the desired date, keeping in mind that different cities update their reports at different frequencies.\n\nNot all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the maximum/minimum temperature as reported by the corresponding NWS Climatological Report (Daily) linked in the rules above. Preliminary NWS reporting and measurement methods may be subject to underlying rounding and conversion nuances. Traders should exercise caution when interpreting preliminary NWS data.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.009999999999999998,"active":true,"closed":false,"start_date":"2026-05-30T14:00:00Z","end_date":"2026-06-07T14:00:00Z","closed_time":"2026-06-01T05:00:00Z","volume":351.0,"volume_24hr":351.0,"prob_24h_change":0.01,"volume_24h_change":351.0,"normalized_vol_24hr":11.821194648742676,"normalized_volume":11.156013488769531,"liquidity":null,"categories":["Climate and Weather"],"updated_at":"2026-05-30T21:26:45.616955Z","fetched_at":"2026-05-30T21:26:45.616955Z","added_at":"2026-05-30T14:08:36.729359Z","url":"https://kalshi.com/markets/kxlowtbos/lowest-temperature-in-boston-on-may-31-2026/kxlowtbos-26may31","event_title":"Lowest temperature in Boston on May 31, 2026?","chart_24h":[0.0,0.0,0.01,0.01,0.01]},{"source":"kalshi","id":"KXLOWTBOS-26MAY31-T36","event_id":"KXLOWTBOS-26MAY31","slug":"KXLOWTBOS-26MAY31-T36","question":"Will the minimum temperature be <36° on May 31, 2026?","group_item_title":"35° or below","description":"If the minimum temperature recorded at Boston for May 31, 2026, is less than 36° fahrenheit according to the National Weather Service's Climatological Report (Daily), then the market resolves to Yes.\n\n---\n\nData for CLIBOS can be found by clicking the following URL: https://www.weather.gov/wrh/climate?wfo=box, navigating to the \"Observed Weather\" tab, and choosing the location \"Boston (Logan Airport), MA\" with Daily Climate Report selected. Please use the latest version of the data for the desired date, keeping in mind that different cities update their reports at different frequencies.\n\nNot all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the maximum/minimum temperature as reported by the corresponding NWS Climatological Report (Daily) linked in the rules above. Preliminary NWS reporting and measurement methods may be subject to underlying rounding and conversion nuances. Traders should exercise caution when interpreting preliminary NWS data.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.01,0.99],"probability":0.01,"spread":0.01,"active":true,"closed":false,"start_date":"2026-05-30T14:00:00Z","end_date":"2026-06-07T14:00:00Z","closed_time":"2026-06-01T05:00:00Z","volume":335.0,"volume_24hr":335.0,"prob_24h_change":0.01,"volume_24h_change":335.0,"normalized_vol_24hr":11.634367942810059,"normalized_volume":10.979700088500977,"liquidity":null,"categories":["Climate and Weather"],"updated_at":"2026-05-30T17:45:09.317958Z","fetched_at":"2026-05-30T17:44:31.281284Z","added_at":"2026-05-30T14:08:36.729359Z","url":"https://kalshi.com/markets/kxlowtbos/lowest-temperature-in-boston-on-may-31-2026/kxlowtbos-26may31","event_title":"Lowest temperature in Boston on May 31, 2026?","chart_24h":[0.0,0.01,0.01,0.01]},{"source":"kalshi","id":"KXLOWTBOS-26MAY31-B40.5","event_id":"KXLOWTBOS-26MAY31","slug":"KXLOWTBOS-26MAY31-B40.5","question":"Will the minimum temperature be 40-41° on May 31, 2026?","group_item_title":"40° to 41°","description":"If the minimum temperature recorded at Boston for May 31, 2026, is between 40-41° fahrenheit according to the National Weather Service's Climatological Report (Daily), then the market resolves to Yes.\n\n---\n\nData for CLIBOS can be found by clicking the following URL: https://www.weather.gov/wrh/climate?wfo=box, navigating to the \"Observed Weather\" tab, and choosing the location \"Boston (Logan Airport), MA\" with Daily Climate Report selected. Please use the latest version of the data for the desired date, keeping in mind that different cities update their reports at different frequencies.\n\nNot all weather data is the same. While checking a source like AccuWeather or Google Weather may help guide your decision, the official and final value used to determine this market is the maximum/minimum temperature as reported by the corresponding NWS Climatological Report (Daily) linked in the rules above. Preliminary NWS reporting and measurement methods may be subject to underlying rounding and conversion nuances. Traders should exercise caution when interpreting preliminary NWS data.","image":null,"icon":null,"outcomes":["Yes","No"],"outcome_prices":[0.0,1.0],"probability":0.0,"spread":0.05,"active":true,"closed":false,"start_date":"2026-05-30T14:00:00Z","end_date":"2026-06-07T14:00:00Z","closed_time":"2026-06-01T05:00:00Z","volume":0.0,"volume_24hr":0.0,"prob_24h_change":0.0,"volume_24h_change":0.0,"normalized_vol_24hr":null,"normalized_volume":null,"liquidity":null,"categories":["Climate and Weather"],"updated_at":"2026-05-31T00:28:31.204980Z","fetched_at":"2026-05-31T00:28:31.204980Z","added_at":"2026-05-30T14:08:36.729359Z","url":"https://kalshi.com/markets/kxlowtbos/lowest-temperature-in-boston-on-may-31-2026/kxlowtbos-26may31","event_title":"Lowest temperature in Boston on May 31, 2026?","chart_24h":[0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0]}],"_meta":{"attribution":"pdata.world — aggregated prediction-market data across 8 platforms","canonical_url":"https://pdata.world/events/kalshi/KXLOWTBOS-26MAY31","as_of":"2026-05-31T01:10:49.268316Z","docs":"https://api.pdata.world/docs","cite_as":"According to pdata.world (tracking Kalshi): \"Lowest temperature in Boston on May 31, 2026?\" — top market at 68% probability across 6 outcomes","source_url":null}}