U.S. METAR numeric codes

Question 1

11234

Answer 1

6 hour maximum temperature. Follows RMK with five digits starting with 1. Second digit is 0 for positive and 1 for negative. The last 3 digits equal the temperature in tenths.
This example value equals −23.4 °C (−10 °F).

Question 2

20123

Answer 2

6 hour minimum temperature. Follows RMK with five digits starting with 2. Second digit is 0 for positive and 1 for negative. The last 3 digits equal the temperature in tenths.
This example value equals 12.3 °C (54 °F).

Question 3

4/012

Answer 3

Total snow depth in inches. Follows RMK starting with 4/ and followed by 3 digit number that equals snow depth in inches.
This example value equals 12 inches of snow currently on the ground.

Question 4

402340123

Answer 4

24-hour maximum and minimum temperature. Follows RMK with nine digits starting with 4. The second and sixth digit equals 0 for positive for 1 for negative. Digits 3–5 equal the maximum temperature in tenths and the digits 7–9 equals the minimum temperature in tenths.
This example value equals 23.4 °C (74 °F) and 12.3 °C (54 °F).

Question 5

52006

Answer 5

3 hour pressure tendency. Follows RMK with 5 digits starting with 5. The second digit gives the tendency. In general 0–3 is rising, 4 is steady and 5–8 is falling. The last 3 digits give the pressure change in tenths of a millibar in the last 3 hours.
This example indicates a rising tendency of 0.6 millibars (0.018 inHg).

Question 6

60123

Answer 6

3 or 6 hour precipitation amount. Follows RMK with 5 digits starting with 6. The last 4 digits are the inches of rain in hundredths. If used for the observation nearest to 00:00, 06:00, 12:00, or 18:00 UTC, it represents a 6-hour precipitation amount. If used in the observation nearest to 03:00, 09:00, 15:00 or 21:00 UTC, it represents a 3-hour precipitation amount.
This example shows 1.23 inches (31 mm) of rain.

Question 7

70246

Answer 7

24-hour precipitation amount. Follows RMK with 5 digits starting with 7. The last 4 digits are the inches of rain in hundredths.
This example shows 2.46 inches (62 mm) of rain.

Question 8

8/765

Answer 8

Cloud cover using WMO code. Follows RMK starting with 8/ followed by a 3 digit number representing WMO cloud codes.

Question 9

98060

Answer 9

Duration of sunshine in minutes. Follows RMK with 5 digits starting with 98. The last 3 digits are the total minutes of sunshine.
This example indicates 60 minutes of sunshine.

Question 10

931222

Answer 10

Snowfall in the last 6-hours. Follows RMK with 6 digits starting with 931. The last 3 digits are the total snowfall in inches and tenths.
This example indicates 22.2 inches (560 mm) of snowfall.

Question 11

933021

Answer 11

Liquid water equivalent of the snow (SWE). Follows RMK with 6 digits starting with 933. The last 3 digits are the total inches in tenths.
This example indicates 2.1 inches (53 mm) SWE.