Data Calendar for DC - National Arboretum

The calendar chart below shows the daily reported climate variables. You can click on a date to display the values for all sites for that day. Time stamps are displayed in the America/New_York timezone. Wind speeds are in mph and temperatures in Fahrenheit. Values flagged with a (E) are estimated by the IEM.

Year:  

Month:  

 

May 2025Jun 2025 Jul 2025
SundayMondayTuesdayWednesday ThursdayFridaySaturday
01 (@8)
High: 72
Low: 42
Precip: 0.09
Snow: 0
Snow Depth: 0
02 (@8)
High: 71
Low: 48
Precip: 0.00
03 (@8)
High: 77
Low: 48
Precip: 0.00
04 (@8)
High: 84
Low: 55
Precip: 0.00
05 (@7)
High: 88(E)
Low: 66(E)
Precip: 0.00(E)
06 (@8)
High: 86
Low: 62
Precip: 0.00
07 (@11)
High: 89
Low: 66
Precip: 0.04
08 (@8)
High: 89
Low: 70
Precip: 0.00
09 (@8)
High: 76
Low: 64
Precip: 0.05
10 (@7)
High: 86(E)
Low: 68(E)
Precip: 0.00
11 (@8)
High: 87
Low: 61
Precip: 0.05
12 (@8)
High: 88
Low: 66
Precip: 0.00
13 (@7)
High: 94
Low: 67
Precip: 0.00
14 (@8)
High: 93
Low: 69
Precip: 0.75
15 (@8)
High: 85
Low: 15
Precip: 0.05
16 (@8)
High: 61
Low: 57
Precip: 1.25
17 (@8)
High: 66
Low: 59
Precip: 0.20
18 (@8)
High: 79
Low: 65
Precip: 0.00
19 (@7)
High: 89(E)
Low: 71(E)
Precip: 1.06
2021
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The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.

Daily High/Low Plot


Description: This chart of the monthly temperature data. The bars are the observations and the dots are climatology.

Daily Rainfall


Description: This chart is of daily precipitation for the month. The red line would be an average month while the blue line and bars are observations.

Daily Average Wind Speeds


Description: This chart is of the daily average wind speeds.

The data presented here provided by IEM API webservice: daily.json. A simple CSV option exists as well.