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HOME > Monitoring and Data > U.S. Climate Data > Precipitation & Temperature > Daily Temperature Analyses > Temperature Analyses
US Daily Temperature Analyses
Select a date, type of image, and range of days, then click "DISPLAY!" to display the images below.
Release schedule of maps :
means - 2 days ago
maximum / minimum - 1 day ago
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Choose a range of days for the analyses :
Daily 5-Day 7-Day 14-Day 30-Day 90-Day
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Stations Used in Latest Daily Analyses
To access final, quality controlled data, visit NCEI. These plots use preliminary real-time data.
About the Analyses
DATA SOURCE: River Forecast Centers ~5000 stations per day, including ~1500 stations from the Hydrologic Automated Data System (except above 5km altitude), and Climate Assessment Data Base ~several hundred stations per day. Climatologies used to calculate the anomalies were updated to use the 1981-2010 climatology dataset as of August 5, 2011.

RESOLUTION: 0.5 degree x 0.5 degree

DOMAIN: 20N - 60N; 140W - 60W

FORMAT: The format is sequential 32-bit IEEE floating point created on a big_endian platform (e.g. cray, sun, sgi and hp). The undefined (missing) value is 9999.

WINDOW: Day 1 analysis is valid for the window from 12Z on day 0 to 12Z on day 1; because of report receipt timing, daily minima are available 1 day earlier than the maxima and the means.

ANALYSIS SCHEME: Modified Cressman (1959) scheme (Glahn et al. 1985; Charba et al. 1992). Minimum stations for analysis: 350. If the number of stations is fewer than the minimum, the analysis is not performed for that day.

QUALITY CONTROL: Climatological standard deviation check. If a reported value is more than 4 standard deviations removed from the historical distribution, the value is omitted from the analysis.

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