- Will the highest temperature in San Francisco be between 60-61°F on August 28?<1¢
- Will the highest temperature in San Francisco be between 68-69°F on August 28?33¢
- Will the highest temperature in San Francisco be between 64-65°F on August 28?7¢
- Will the highest temperature in San Francisco be between 72-73°F on August 28?6¢
- Will the highest temperature in San Francisco be between 74-75°F on August 28?<1¢
- Will the highest temperature in San Francisco be between 58-59°F on August 28?<1¢
- Will the highest temperature in San Francisco be between 66-67°F on August 28?21¢
- Will the highest temperature in San Francisco be 76°F or higher on August 28?<1¢
- Will the highest temperature in San Francisco be 57°F or below on August 28?<1¢
- Will the highest temperature in San Francisco be between 62-63°F on August 28?4¢
- Will the highest temperature in San Francisco be between 70-71°F on August 28?26¢
This market will resolve to the temperature range that contains the highest temperature recorded by NOAA at the San Francisco International Airport Station in degrees Fahrenheit on 28 Aug '26. The resolution source for this market will be information from NOAA, specifically the highest reading under the "Temp" column for all times on this day, available here: https://www.weather.gov/wrh/timeseries?site=ksfo This market will resolve off of the Hourly Data provided using the "Show Hourly Data" button. If NOAA data is unavailable or missing for the observation period, Weather Underground will be used as the secondary resolution source. To toggle between Fahrenheit and Celsius, click the "Switch to US Units w/ kts" button until the relevant table displays °F. This market can not resolve until the first data point for the following date has been published on the resolution source. The resolution source for this market measures temperatures to whole degrees Fahrenheit (eg, 21°F). Thus, this is the level of precision that will be used when resolving the market. Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Persistent marine layer cooling from the cold Pacific Ocean and California Current continues to dominate San Francisco conditions on August 28, 2026, keeping the daily maximum at SFO tightly clustered in the mid-to-upper 60s. Official National Weather Service guidance calls for a high near 69°F under mostly cloudy to partly sunny skies after morning low clouds or a slight shower chance, with moderate west-to-northwest winds of 7–15 mph (gusts to 23 mph) maintaining onshore flow. This setup reflects the typical summer pattern in which coastal upwelling sustains ocean surface temperatures around 55–58°F, while the shallow marine layer caps solar heating and prevents significant warming despite seasonal norms. Recent model consensus and observations show the layer remaining stable rather than eroding quickly, limiting upside potential above 71°F while also capping downside risk below 66°F absent unusually strong fog or wind. The closely bunched market probabilities around 66–71°F (nearly 80% combined) reflect this narrow forecast envelope and the inherent uncertainty in exact afternoon clearing timing and inversion strength, with traders weighting the NWS point forecast and historical analogs for late-August coastal maxima.