Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in St. Mary, Missouri

Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →

St. Mary, MO
Sunday, May 17 at 2:59 AM
73
°
Clear
Feels like
73°
Humidity
63%
Wind
9 mph
Sunrise
5:48 AM
Sunset
8:03 PM
St. Mary, MO
Hour by hour · 24h
64°
9p
62°
10p
61°
11p
59°
12a
59°
1a
58°
2a
58°
3a
58°
4a
57°
5a
58°
6a
60°
7a
63°
8a
68°
9a
72°
11%
10a
72°
11%
11a
78°
17%
12p
80°
1p
77°
12%
2p
79°
3p
81°
4p
83°
5p
81°
6p
80°
7p
78°
8p
L 57°H 83°
St. Mary, MO
7-day forecast
  1. Today
    May 16
    Thunderstorm
    41%
    83°73°
  2. Sunday
    May 17
    Overcast
    87°66°
  3. Monday
    May 18
    Showers
    33%
    79°69°
  4. Tuesday
    May 19
    Showers
    83%
    85°62°
  5. Wednesday
    May 20
    Drizzle
    83%
    68°56°
  6. Thursday
    May 21
    Light Drizzle
    18%
    65°56°
  7. Friday
    May 22
    Light Drizzle
    20%
    65°56°
St. Mary, MO
Anemometer · 24h winds · from true
NESW
From · True
SSE
163° · backing 18°
Direction
SSE
163°
Sustained
9
mph
Gust
16
mph
Peak 24h
29
avg 9
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 9 · pk 29 @ 8:00a
−24h−18h−12h−6hnow
Light breeze backing 18° from the sse.
St. Mary, MO
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
995.0
+1.1 mb in 3h · rising · 29.38 inHg
Now
995.0
mb
3h
+1.1
mb
12h
-1.5
mb
24h
+1.6
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 993998
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
St. Mary, MO
Air quality
31
AQI
Good
PM 2.5
4.3 μg/m³
PM 10
4.8 μg/m³
NO₂
3.3 μg/m³
Ozone
85.0 μg/m³
UV Index
0.0 Low
St. Mary, MO
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:20 AM
Sunrise
5:48 AM
Daylight
14h 15m
Sunset
8:03 PM
Civil dusk
1:34 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
St. Mary, MO
The moon
New Moon
0% illuminated
Moonrise
10:56 AM
Moonset
1:31 AM
In sign
♊︎ Gemini
St. Mary, MO
Microseason · 28 of 72
May 16–20

Roses open on the Piedmont edge

insect
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

St. Mary at a glance

  • Today vs. normal: 73°F — typical for the season
  • Last frost: April 3 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Warm-season window is open

As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.

ZIP codes in St. Mary

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.